Computers can be classified according to size, work, brand or model. so, if anybody asked which/what computer do you have ? A single answer is not sufficient. A single computer can be micro on the basis of size, IBM compatible on the basis of brand, AT on the basis of model and digital on the basis of work. Generally. we can classify computers on the following terms.
a) On the basis of size
On the basis of size computers can be classified into three groups. They are:
- Micro Computer
- Mini Computer
- Mainframe Computer
- Super Computer
Explanation of each is given below:
Micro computers
These are the smallest computer systems on the basis of size. These computers are called micro because microprocessor id used as CPU and they are very small. The smallest of this category are laptop, notebook and palmtop computers. The size is reducing day-by-day. Examples of this category are: IBM Pentium PC, Apple/Macintosh, Sun spark workstation etc. Some major characteristics of this category are as follows:
1. Smallest in terms of size. Can be kept on top of a desk (Desktop), on palm (palmtop), on top of our lap (laptop) and like a notebook.
2. Speed is highest and colt lower.
3. Since a single user system is used, storage devices and memory are smaller sized.
Mini computer
There are the medium sized computers on the basis of size. A centrally located CPU is connected with around 50 terminals. Examples of these computers are: Prime 9755, Vax36 etc. Some other major characteristics of this type of computers are listed below:
1. Medium sized computer occupying approximately 10 sq of area.
2. Around 50 terminals and large capacity storage devices than micro computers but smaller than mainframes.
3. Used for general purpose.
4. Used in medium sized organizations and corporations.
Mainframe computer
These are the largest computers on the basis of size. A centrally located CPU is connected with more than100 terminals. Examples of these computers are: IBM 1401, ICL 2950/10 etc. Some of the major characteristics of these computers are listed below:
1. Very large in size with approximately 1000sq. feet area.
2. Central processor, central administration.
3. More than 100 terminals, large capacity storage devices used.
4. Fastest and most expensive system in comparison to contemporary machines.
5. General purpose computers.
6. Used by large organization and governments for large scale data processing.
Super computer
Supercomputer is a computer that can process a great deal of information or make involved in extensive calculation very quickly. It processes the data instructions in millionths of a second, or microseconds. Supercomputers can resolve complex mathematical equations in a few hours, which would have taken a scientist with paper and pencil a lifetime, or years using a hand calculator.
b) On the basis of work
On the basis of the data they operate on computers can be classified as follows:
- Analog Computer
- Digital Computer- Hybrid Computer
Thursday, July 22, 2010
History of Computer
The Computer was developed from the development of Abacus which was developed 3000 thousand year ago in China. It is one type of counting device which has two sections Heaven and Earth. By moving (Manipulating) the beds of heaven and Earth the counting works will be performed.
After the development of this device in different time period different types of advanced devices were developed. Such as; Napier's bone
Slide rule
Pascaline
The Computer is also developed by using these steps.
In 1946
According to this development of devices into different time period the computer can be categorized into different generation. They are ;
1. First Generation (1946-1958) :- In this time period the computer was developed for the first time. In this time period the memory devices was used in Computers. Which is known as vacume tube?
Features of Generation Computer
- It was very big in Size.
- It uses vacume tube as main memory.
- In this generation of Computer required more electricity (Power) up to 30 KB.
- It was very slow in processing.
- It generates more heat.
2. Second Generation (1958-1964) :- The development of Computer between the time period 1959 to 1964 is known as second Generation. In this generation the technology was developed than first generation.
Features of generation Computer
- It was transistor as main memory
- The size of computer was reduced than first generation
- It has high processing speed than previous generation
- It required less electricity than first generation.
3. Third Generation (1965-1974)
The development of Computer in this times period it known as third generation computer. In this time period the computer was more advanced and reliable.
Features of third generation
- IC was use as main memory and circuit.
- The size was also reduced then previous generation
- The processing speed was increased and memory capacity was also increased.
- It uses less electricity power than previous generation.
- All types of normal software can be easily run in this computer. So it provides friendly environment to the user.
Fourth generation computer (1975- Till)
The computer which we can use now days is known as fourth generation of computer. It has high processing speed and more storage capacity. It also can be categorized in different such categorized such as; Pentium one; Pentium 2 , 3 and 4.
Features of Forth generation
- VLSI and VVLSI were used as main chip.
-Processing speed was developed up to GHZ
- It has more storage capacity than pervious generation
- The storage capacity it up to GB.
- The size of this generation computer is decreased up to laptop computer.
- Ti required low electric power up to twelve volt.
Fifth generation of computer (not started)The fifth generation of computer has been expected self thinking capacity and understood the human language. The Biochips are used as main components of computer.
After the development of this device in different time period different types of advanced devices were developed. Such as; Napier's bone
Slide rule
Pascaline
The Computer is also developed by using these steps.
In 1946
According to this development of devices into different time period the computer can be categorized into different generation. They are ;
1. First Generation (1946-1958) :- In this time period the computer was developed for the first time. In this time period the memory devices was used in Computers. Which is known as vacume tube?
Features of Generation Computer
- It was very big in Size.
- It uses vacume tube as main memory.
- In this generation of Computer required more electricity (Power) up to 30 KB.
- It was very slow in processing.
- It generates more heat.
2. Second Generation (1958-1964) :- The development of Computer between the time period 1959 to 1964 is known as second Generation. In this generation the technology was developed than first generation.
Features of generation Computer
- It was transistor as main memory
- The size of computer was reduced than first generation
- It has high processing speed than previous generation
- It required less electricity than first generation.
3. Third Generation (1965-1974)
The development of Computer in this times period it known as third generation computer. In this time period the computer was more advanced and reliable.
Features of third generation
- IC was use as main memory and circuit.
- The size was also reduced then previous generation
- The processing speed was increased and memory capacity was also increased.
- It uses less electricity power than previous generation.
- All types of normal software can be easily run in this computer. So it provides friendly environment to the user.
Fourth generation computer (1975- Till)
The computer which we can use now days is known as fourth generation of computer. It has high processing speed and more storage capacity. It also can be categorized in different such categorized such as; Pentium one; Pentium 2 , 3 and 4.
Features of Forth generation
- VLSI and VVLSI were used as main chip.
-Processing speed was developed up to GHZ
- It has more storage capacity than pervious generation
- The storage capacity it up to GB.
- The size of this generation computer is decreased up to laptop computer.
- Ti required low electric power up to twelve volt.
Fifth generation of computer (not started)The fifth generation of computer has been expected self thinking capacity and understood the human language. The Biochips are used as main components of computer.
2. Out Put device
Input Device of Computer
1. Keyboard: It is known as primary input device. It is also known as typing device, because we can input the data and instruction by typing. It have different types of key combination such as, alphabetical keys (A to Z), numerical keys (0 to9), Function keys (F1 to F12) Arrow keys (Right, Left, Down and up) and other keys, Most of the keyboard have QWERTY layout; The keyboard have 102 to 108 keys and in FCC standard
2. Mouse: - It is other types of input device and also known as pointing device. By using the mouse pointer we can perform the works at computer. When we move the mouse the pointer will move to the same direction and when we click in certain command field the work mentioned at the command field will be performed. The mouse has to buttons (left and right). The left button is used for normal work and right button is used for other works. The stroller of mouse is used to move the working file up a down. The mouse is of three types they are Serial Mouse, Ps/2 Mouse and USB Mouse.
3. Scanner: - It is also another type of input device of computer. Especially this device is used to convert the hand copy data into soft copy and send the data to the computer. Basically used to input the picture files to the computer.
4. Digital Camera: - We can use this device to input the digital picture files to the computer we can connect the digital camera at computer by suing the USB port.
5. Joystick: - It is one type of control device, which is used for gaming option. This device is specially designed to play game at computer.
6. Light pen: - It has the light sensitive detector at its tip and it generates the light we should use this device at the pad, when we write something at pad the hand writing will input to the computer also it as known as input device.
2. Out Put device
Monitor: It is primary output device of computer and also known as VDU (Visual Display Unit) because it provides all the result to the user visually It is also known as soft copy output device, Because we can't touch the data displayed on it and we can easily edit the data on it the monitors are different types according to its technology such as;
- Monochrome Monitor: - Provide the result in black and white display.
- Color Monitor: - Provides the result colorful.
- CRT Monitor (Cathode Ray Tube):- This type of monitor uses one vacume tube which is known as cathod Ray tube to display the image and objects.
- LCD (Liquid Crystal Display):- It is more advanced than CRT monitor. It is very thin in size and uses the liquid crystal to form objects.
Printer: - It is known as hand copy output device, when we give print command to the computer, the printer gives the result at printed form on the paper. So we can easily touch the printed data. But we can not edit the printed data. We can categorize the printer into two types. They are;-
i) Impact Printer: - The printer which hits on the paper while printing is known as impact printer. Such as Dot Matrix Printer.
ii) Non Impact Printer: - The printer which sprays the liquid or powder ink at the paper to form on object is known as non- Impact printer it doesn't hit at the paper while printing. Such as Bubble jet printer , laser printer
Plotter: - It is also hand copy output device. Especially this device is used to print the high Quality graphics in large size.Motherboard: - It is the main PCB (Printed Circuit Board) of Computer. The main work of this board is to flow the data from one location to another it contains different sections and it have its own speed which is known as but speed. (Data transfer speed)
It have the microprocessor socket to connect the microprocessors, RAM slots, PCI slots, ISA slots, AGP slots, H.D.D. controller, F.P.P. Controller, keyboard Controller and other sections.
Processor: - It is used to process the raw data input by using different types of input device. It has its own processing speed. It is connected at processor socket of motherboard
RAM (Random Access Memory) It is temporary memory of computer. It can store the data while the electricity is flowing
H.D.D. (Hard disk drive):- It is permanent storage Media of Computer. It stores all the operating system, programs and all the files and folder of the computer, It have it's own storage capacity
CDROM: - It can read the data of CD's – especially this device is used to read and display the contains of the CDS.
F.D.D. (Floppy disk drive):- the drive which is used to operate 1.44 MB floppy disk. The main work of this device is to read and write the data on the floppy disk.
1. Keyboard: It is known as primary input device. It is also known as typing device, because we can input the data and instruction by typing. It have different types of key combination such as, alphabetical keys (A to Z), numerical keys (0 to9), Function keys (F1 to F12) Arrow keys (Right, Left, Down and up) and other keys, Most of the keyboard have QWERTY layout; The keyboard have 102 to 108 keys and in FCC standard
2. Mouse: - It is other types of input device and also known as pointing device. By using the mouse pointer we can perform the works at computer. When we move the mouse the pointer will move to the same direction and when we click in certain command field the work mentioned at the command field will be performed. The mouse has to buttons (left and right). The left button is used for normal work and right button is used for other works. The stroller of mouse is used to move the working file up a down. The mouse is of three types they are Serial Mouse, Ps/2 Mouse and USB Mouse.
3. Scanner: - It is also another type of input device of computer. Especially this device is used to convert the hand copy data into soft copy and send the data to the computer. Basically used to input the picture files to the computer.
4. Digital Camera: - We can use this device to input the digital picture files to the computer we can connect the digital camera at computer by suing the USB port.
5. Joystick: - It is one type of control device, which is used for gaming option. This device is specially designed to play game at computer.
6. Light pen: - It has the light sensitive detector at its tip and it generates the light we should use this device at the pad, when we write something at pad the hand writing will input to the computer also it as known as input device.
2. Out Put device
Monitor: It is primary output device of computer and also known as VDU (Visual Display Unit) because it provides all the result to the user visually It is also known as soft copy output device, Because we can't touch the data displayed on it and we can easily edit the data on it the monitors are different types according to its technology such as;
- Monochrome Monitor: - Provide the result in black and white display.
- Color Monitor: - Provides the result colorful.
- CRT Monitor (Cathode Ray Tube):- This type of monitor uses one vacume tube which is known as cathod Ray tube to display the image and objects.
- LCD (Liquid Crystal Display):- It is more advanced than CRT monitor. It is very thin in size and uses the liquid crystal to form objects.
Printer: - It is known as hand copy output device, when we give print command to the computer, the printer gives the result at printed form on the paper. So we can easily touch the printed data. But we can not edit the printed data. We can categorize the printer into two types. They are;-
i) Impact Printer: - The printer which hits on the paper while printing is known as impact printer. Such as Dot Matrix Printer.
ii) Non Impact Printer: - The printer which sprays the liquid or powder ink at the paper to form on object is known as non- Impact printer it doesn't hit at the paper while printing. Such as Bubble jet printer , laser printer
Plotter: - It is also hand copy output device. Especially this device is used to print the high Quality graphics in large size.Motherboard: - It is the main PCB (Printed Circuit Board) of Computer. The main work of this board is to flow the data from one location to another it contains different sections and it have its own speed which is known as but speed. (Data transfer speed)
It have the microprocessor socket to connect the microprocessors, RAM slots, PCI slots, ISA slots, AGP slots, H.D.D. controller, F.P.P. Controller, keyboard Controller and other sections.
Processor: - It is used to process the raw data input by using different types of input device. It has its own processing speed. It is connected at processor socket of motherboard
RAM (Random Access Memory) It is temporary memory of computer. It can store the data while the electricity is flowing
H.D.D. (Hard disk drive):- It is permanent storage Media of Computer. It stores all the operating system, programs and all the files and folder of the computer, It have it's own storage capacity
CDROM: - It can read the data of CD's – especially this device is used to read and display the contains of the CDS.
F.D.D. (Floppy disk drive):- the drive which is used to operate 1.44 MB floppy disk. The main work of this device is to read and write the data on the floppy disk.
Input Device of Computer
1. Keyboard: It is known as primary input device. It is also known as typing device, because we can input the data and instruction by typing. It have different types of key combination such as, alphabetical keys (A to Z), numerical keys (0 to9), Function keys (F1 to F12) Arrow keys (Right, Left, Down and up) and other keys, Most of the keyboard have QWERTY layout; The keyboard have 102 to 108 keys and in FCC standard
2. Mouse: - It is other types of input device and also known as pointing device. By using the mouse pointer we can perform the works at computer. When we move the mouse the pointer will move to the same direction and when we click in certain command field the work mentioned at the command field will be performed. The mouse has to buttons (left and right). The left button is used for normal work and right button is used for other works. The stroller of mouse is used to move the working file up a down. The mouse is of three types they are Serial Mouse, Ps/2 Mouse and USB Mouse.
3. Scanner: - It is also another type of input device of computer. Especially this device is used to convert the hand copy data into soft copy and send the data to the computer. Basically used to input the picture files to the computer.
4. Digital Camera: - We can use this device to input the digital picture files to the computer we can connect the digital camera at computer by suing the USB port.
5. Joystick: - It is one type of control device, which is used for gaming option. This device is specially designed to play game at computer.
6. Light pen: - It has the light sensitive detector at its tip and it generates the light we should use this device at the pad, when we write something at pad the hand writing will input to the computer also it as known as input device.
2. Mouse: - It is other types of input device and also known as pointing device. By using the mouse pointer we can perform the works at computer. When we move the mouse the pointer will move to the same direction and when we click in certain command field the work mentioned at the command field will be performed. The mouse has to buttons (left and right). The left button is used for normal work and right button is used for other works. The stroller of mouse is used to move the working file up a down. The mouse is of three types they are Serial Mouse, Ps/2 Mouse and USB Mouse.
3. Scanner: - It is also another type of input device of computer. Especially this device is used to convert the hand copy data into soft copy and send the data to the computer. Basically used to input the picture files to the computer.
4. Digital Camera: - We can use this device to input the digital picture files to the computer we can connect the digital camera at computer by suing the USB port.
5. Joystick: - It is one type of control device, which is used for gaming option. This device is specially designed to play game at computer.
6. Light pen: - It has the light sensitive detector at its tip and it generates the light we should use this device at the pad, when we write something at pad the hand writing will input to the computer also it as known as input device.
COMPUTER parts
Computer is an electronic device which accepts the raw data as input processes them and gives the desired result to user.
According to this definition we can find three types of devices in a set of computer they are 11. Input device :- The device which is use to feed raw data to the computer is known as input device such as, Keyboard, Mouse, Digital Camera, Scanner, light pen, Joystick
2. CPU: - It is the main Machine of the computer. It is also known as brain of computer, All the words will be performed in this unit and stores also.
3. Output Device :- The device which is used to get the result of work done at computer is known as output device such as; Monitor, Printer, Plotter
According to this definition we can find three types of devices in a set of computer they are 11. Input device :- The device which is use to feed raw data to the computer is known as input device such as, Keyboard, Mouse, Digital Camera, Scanner, light pen, Joystick
2. CPU: - It is the main Machine of the computer. It is also known as brain of computer, All the words will be performed in this unit and stores also.
3. Output Device :- The device which is used to get the result of work done at computer is known as output device such as; Monitor, Printer, Plotter
Wednesday, July 21, 2010
. Out Put device
Monitor: It is primary output device of computer and also known as VDU (Visual Display Unit) because it provides all the result to the user visually It is also known as soft copy output device, Because we can't touch the data displayed on it and we can easily edit the data on it the monitors are different types according to its technology such as;
- Monochrome Monitor: - Provide the result in black and white display.
- Color Monitor: - Provides the result colorful.
- CRT Monitor (Cathode Ray Tube):- This type of monitor uses one vacume tube which is known as cathod Ray tube to display the image and objects.
- LCD (Liquid Crystal Display):- It is more advanced than CRT monitor. It is very thin in size and uses the liquid crystal to form objects.
Printer: - It is known as hand copy output device, when we give print command to the computer, the printer gives the result at printed form on the paper. So we can easily touch the printed data. But we can not edit the printed data. We can categorize the printer into two types. They are;-
i) Impact Printer: - The printer which hits on the paper while printing is known as impact printer. Such as Dot Matrix Printer.
ii) Non Impact Printer: - The printer which sprays the liquid or powder ink at the paper to form on object is known as non- Impact printer it doesn't hit at the paper while printing. Such as Bubble jet printer , laser printer
Plotter: - It is also hand copy output device. Especially this device is used to print the high Quality graphics in large size.
CPU :-
Motherboard: - It is the main PCB (Printed Circuit Board) of Computer. The main work of this board is to flow the data from one location to another it contains different sections and it have its own speed which is known as but speed. (Data transfer speed)
It have the microprocessor socket to connect the microprocessors, RAM slots, PCI slots, ISA slots, AGP slots, H.D.D. controller, F.P.P. Controller, keyboard Controller and other sections.
Processor: - It is used to process the raw data input by using different types of input device. It has its own processing speed. It is connected at processor socket of motherboard
RAM (Random Access Memory) It is temporary memory of computer. It can store the data while the electricity is flowing
H.D.D. (Hard disk drive):- It is permanent storage Media of Computer. It stores all the operating system, programs and all the files and folder of the computer, It have it's own storage capacity
CDROM: - It can read the data of CD's – especially this device is used to read and display the contains of the CDS.
F.D.D. (Floppy disk drive):- the drive which is used to operate 1.44 MB floppy disk. The main work of this device is to read and write the data on the floppy disk.
History of Computer
The Computer was developed from the development of Abacus which was developed 3000 thousand year ago in China. It is one type of counting device which has two sections Heaven and Earth. By moving (Manipulating) the beds of heaven and Earth the counting works will be performed.
After the development of this device in different time period different types of advanced devices were developed. Such as; Napier's bone
Slide rule
Pascaline
The Computer is also developed by using these steps.
In 1946
According to this development of devices into different time period the computer can be categorized into different generation. They are ;
1. First Generation (1946-1958) :- In this time period the computer was developed for the first time. In this time period the memory devices was used in Computers. Which is known as vacume tube?
Features of Generation Computer
- It was very big in Size.
- It uses vacume tube as main memory.
- In this generation of Computer required more electricity (Power) up to 30 KB.
- It was very slow in processing.
- It generates more heat.
2. Second Generation (1958-1964) :- The development of Computer between the time period 1959 to 1964 is known as second Generation. In this generation the technology was developed than first generation.
Features of generation Computer
- It was transistor as main memory
- The size of computer was reduced than first generation
- It has high processing speed than previous generation
- It required less electricity than first generation.
3. Third Generation (1965-1974)
The development of Computer in this times period it known as third generation computer. In this time period the computer was more advanced and reliable.
Features of third generation
- IC was use as main memory and circuit.
- The size was also reduced then previous generation
- The processing speed was increased and memory capacity was also increased.
- It uses less electricity power than previous generation.
- All types of normal software can be easily run in this computer. So it provides friendly environment to the user.
Fourth generation computer (1975- Till)
The computer which we can use now days is known as fourth generation of computer. It has high processing speed and more storage capacity. It also can be categorized in different such categorized such as; Pentium one; Pentium 2 , 3 and 4.
Features of Forth generation
- VLSI and VVLSI were used as main chip.
-Processing speed was developed up to GHZ
- It has more storage capacity than pervious generation
- The storage capacity it up to GB.
- The size of this generation computer is decreased up to laptop computer.
- Ti required low electric power up to twelve volt.
Fifth generation of computer (not started)
The fifth generation of computer has been expected self thinking capacity and understood the human language. The Biochips are used as main components of computer.
- Monochrome Monitor: - Provide the result in black and white display.
- Color Monitor: - Provides the result colorful.
- CRT Monitor (Cathode Ray Tube):- This type of monitor uses one vacume tube which is known as cathod Ray tube to display the image and objects.
- LCD (Liquid Crystal Display):- It is more advanced than CRT monitor. It is very thin in size and uses the liquid crystal to form objects.
Printer: - It is known as hand copy output device, when we give print command to the computer, the printer gives the result at printed form on the paper. So we can easily touch the printed data. But we can not edit the printed data. We can categorize the printer into two types. They are;-
i) Impact Printer: - The printer which hits on the paper while printing is known as impact printer. Such as Dot Matrix Printer.
ii) Non Impact Printer: - The printer which sprays the liquid or powder ink at the paper to form on object is known as non- Impact printer it doesn't hit at the paper while printing. Such as Bubble jet printer , laser printer
Plotter: - It is also hand copy output device. Especially this device is used to print the high Quality graphics in large size.
CPU :-
Motherboard: - It is the main PCB (Printed Circuit Board) of Computer. The main work of this board is to flow the data from one location to another it contains different sections and it have its own speed which is known as but speed. (Data transfer speed)
It have the microprocessor socket to connect the microprocessors, RAM slots, PCI slots, ISA slots, AGP slots, H.D.D. controller, F.P.P. Controller, keyboard Controller and other sections.
Processor: - It is used to process the raw data input by using different types of input device. It has its own processing speed. It is connected at processor socket of motherboard
RAM (Random Access Memory) It is temporary memory of computer. It can store the data while the electricity is flowing
H.D.D. (Hard disk drive):- It is permanent storage Media of Computer. It stores all the operating system, programs and all the files and folder of the computer, It have it's own storage capacity
CDROM: - It can read the data of CD's – especially this device is used to read and display the contains of the CDS.
F.D.D. (Floppy disk drive):- the drive which is used to operate 1.44 MB floppy disk. The main work of this device is to read and write the data on the floppy disk.
History of Computer
The Computer was developed from the development of Abacus which was developed 3000 thousand year ago in China. It is one type of counting device which has two sections Heaven and Earth. By moving (Manipulating) the beds of heaven and Earth the counting works will be performed.
After the development of this device in different time period different types of advanced devices were developed. Such as; Napier's bone
Slide rule
Pascaline
The Computer is also developed by using these steps.
In 1946
According to this development of devices into different time period the computer can be categorized into different generation. They are ;
1. First Generation (1946-1958) :- In this time period the computer was developed for the first time. In this time period the memory devices was used in Computers. Which is known as vacume tube?
Features of Generation Computer
- It was very big in Size.
- It uses vacume tube as main memory.
- In this generation of Computer required more electricity (Power) up to 30 KB.
- It was very slow in processing.
- It generates more heat.
2. Second Generation (1958-1964) :- The development of Computer between the time period 1959 to 1964 is known as second Generation. In this generation the technology was developed than first generation.
Features of generation Computer
- It was transistor as main memory
- The size of computer was reduced than first generation
- It has high processing speed than previous generation
- It required less electricity than first generation.
3. Third Generation (1965-1974)
The development of Computer in this times period it known as third generation computer. In this time period the computer was more advanced and reliable.
Features of third generation
- IC was use as main memory and circuit.
- The size was also reduced then previous generation
- The processing speed was increased and memory capacity was also increased.
- It uses less electricity power than previous generation.
- All types of normal software can be easily run in this computer. So it provides friendly environment to the user.
Fourth generation computer (1975- Till)
The computer which we can use now days is known as fourth generation of computer. It has high processing speed and more storage capacity. It also can be categorized in different such categorized such as; Pentium one; Pentium 2 , 3 and 4.
Features of Forth generation
- VLSI and VVLSI were used as main chip.
-Processing speed was developed up to GHZ
- It has more storage capacity than pervious generation
- The storage capacity it up to GB.
- The size of this generation computer is decreased up to laptop computer.
- Ti required low electric power up to twelve volt.
Fifth generation of computer (not started)
The fifth generation of computer has been expected self thinking capacity and understood the human language. The Biochips are used as main components of computer.
Input Device of Computer
Keyboard: It is known as primary input device. It is also known as typing device, because we can input the data and instruction by typing. It have different types of key combination such as, alphabetical keys (A to Z), numerical keys (0 to9), Function keys (F1 to F12) Arrow keys (Right, Left, Down and up) and other keys, Most of the keyboard have QWERTY layout; The keyboard have 102 to 108 keys and in FCC standard
Mouse: - It is other types of input device and also known as pointing device. By using the mouse pointer we can perform the works at computer. When we move the mouse the pointer will move to the same direction and when we click in certain command field the work mentioned at the command field will be performed. The mouse has to buttons (left and right). The left button is used for normal work and right button is used for other works. The scroller of mouse is used to move the working file up a down. The mouse is of three types they are Serial Mouse, Ps/2 Mouse and USB Mouse.
Scanner: - It is also another type of input device of computer. Especially this device is used to convert the hand copy data into soft copy and send the data to the computer. Basically used to input the picture files to the computer.
Digital Camera: - We can use this device to input the digital picture files to the computer we can connect the digital camera at computer by suing the USB port.
Joystick: - It is one type of control device, which is used for gaming option. This device is specially designed to play game at computer.
Light pen: - It has the light sensitive detector at its tip and it generates the light we should use this device at the pad, when we write something at pad the hand writing will input to the computer also it as known as input device.
Mouse: - It is other types of input device and also known as pointing device. By using the mouse pointer we can perform the works at computer. When we move the mouse the pointer will move to the same direction and when we click in certain command field the work mentioned at the command field will be performed. The mouse has to buttons (left and right). The left button is used for normal work and right button is used for other works. The scroller of mouse is used to move the working file up a down. The mouse is of three types they are Serial Mouse, Ps/2 Mouse and USB Mouse.
Scanner: - It is also another type of input device of computer. Especially this device is used to convert the hand copy data into soft copy and send the data to the computer. Basically used to input the picture files to the computer.
Digital Camera: - We can use this device to input the digital picture files to the computer we can connect the digital camera at computer by suing the USB port.
Joystick: - It is one type of control device, which is used for gaming option. This device is specially designed to play game at computer.
Light pen: - It has the light sensitive detector at its tip and it generates the light we should use this device at the pad, when we write something at pad the hand writing will input to the computer also it as known as input device.
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