Mouse, CPU, Control unit, Monitor, Keyboard
Answers
Keyboard is also the most important input device. It helps to enter the text to the computer. It has maximum 110 keys... some keys are function keys, special keys, numerical keys, alphabet keys etc...
Monitor is the output device. it helps the show the text to user Its also called Visual display unit. Its shape just like a Tv
CPU is the brain of the computer. It is the type of processing device. It helps to process the data enter by user to get result from computer
Explanation:
● Monitor:
A monitor looks like a TV screen. It shows whatever you type on the keyboard or draw with the mouse.
Printer:
A printer prints the results of your work from the computer screen on a sheet of paper. This is called a printout.
● CPU (Central Processing Unit):
CPU is considered as the brain of the computer. CPU performs all types of data processing operations. It stores data, intermediate results and instructions (program). It controls the operations of all parts of computer.
CPU itself has the following three components
■ ALU (Arithmetic Logic Unit)
■ Memory Unit
■ Control Unit
● Keyboard:
Most common and very popular input device is keyboard. The keyboard helps in inputting the data to the computer. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing some additional functions.
Keyboards are of two sizes 84 keys or 101/102 keys, but now 104 keys or 108 keys keyboard is also available for Windows and Internet.
● Mouse:
Mouse is most popular Pointing device. It is a very famous cursor-control device. It is a small palm size box with a round ball at its base which senses the movement of mouse and sends corresponding signals to CPU on pressing the buttons.
Generally, it has two buttons called left and right button and scroll bar is present at the mid. Mouse can be used to control the position of cursor on screen, but it cannot be used to enter text into the computer.
Advantages
■ Easy to use
■ Not very expensive
■ Moves the cursor faster than the arrow keys of keyboard.
●Joystick:
Joystick is also a pointing device, which is used to move cursor position on a monitor screen. It is a stick having a spherical ball at its both lower and upper ends. The lower spherical ball moves in a socket. The joystick can be moved in all four directions.
The function of joystick is similar to that of a mouse. It is mainly used in Computer Aided Designing (CAD) and playing computer games....