Basic Structure of Computer
Computer input & output device ↓
Computer is an electronic device that receives data as input, processes using a processing device and stores data and gives the desired output. The Basic Structure of a computer includes various units such as input, output, storage and processing device to perform arithmetic and logical operations.
(Applications of computer)
1.1 Input device
Computer input & output device ↓
Computers need input to perform a Particular task. Information or data that is entered into the computer using an input device is called input. Input device is the computer unit that sends data and set of instructions to the computer system. The Computer accepts the set of instructions in the form of coded information which the computer understands. A computer would simply be a display device without an input device.
The most commonly used input devices are keyboard, mouse and scanner. The keys pressed on the keyboard provide information as input to the computer. Whenever a key is pressed, the corresponding letter or digit is automatically translated into its corresponding binary code and transmitted over a cable to the memory or processor. Some more examples of input devices are joystick, trackball, light pen, web cameras, and microphones.
Figure 1.6-Keyboard
Figure 1.7 – Mouse
Figure 1.8 Scanner
1.2 Output device
Computer input & output device ↓
A device that is used to display or produce the output is known as an output device.
Many devices are used to display the output such as monitors and printers. The data is processed and displayed in the appropriate manner through the various output devices. The output unit is the counterpart of the input device. Its function is to send the processed results to the outside world, for example printers. The processed results can also be printed in order to have a hard copy of the output. Some graphics displays provide both an output function and an input function which are named as I/O unit in many cases.
Figure 1.9- Monitor
Figure 1.10 – Printer
(Types of Computers)
Click On The Given Button To Support My page