write 10-10 lines about CPU, Monitor,Keyboard,Mouse and Joystick
Answers
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....
Answer: As the lines about CPU, Monitor, Keyboard, Mouse, and Joystick are following.
Explanation:
CPU - Central Processing Unit (CPU) is considered to be the brain of the computer. CPU performs all kinds of data processing operations. It stores data, intermediate results, and instructions (programs). It controls the operation of all parts of the computer. It is responsible for controlling the transfer of data and instructions between other units of the computer. And it communicates with input/output devices for results from the transfer or storage of data. The CPU is the main component that defines a computing device, and while it is of vital importance, the CPU can only work with other hardware. The silicon chip sits in a special socket located on the main circuit board (motherboard or mainboard) inside the device.
Monitor - The monitor is an output device that displays video images and text. A monitor is made up of circuitry, a screen, a power supply, buttons to adjust screen settings, and a casing that houses all of these components. Like most early TVs, the first computer monitors included a CRT (cathode ray tube) and a fluorescent screen. Today, all monitors are made using flat-panel display technology, usually backlit with LEDs (light-emitting diodes).
There are essentially two types of monitors, the other having two variations based on backlighting (CCFL vs LED). The first (and oldest) is the CRT (cathode-ray tube) monitor, which was based on the same technology as the early TVs. The second is an LCD (liquid-crystal display) monitor.
Keyboard - A keyboard is a piece of computer hardware used to input text, characters, and other commands into a computer or similar device.
Modern computer keyboards were modeled after, and are still very similar to, classic typewriter keyboards. There are many keyboard layouts available around the world, but most English language keyboards are of QWERTY type. Other languages have different default formats, such as QWERTZ for German and AZERT for French.
Most keyboards have numbers, letters, symbols, arrow keys, etc., but some also have a numeric keypad, additional functions such as volume control, buttons to power down or sleep the device, dedicated programmable shortcut keys, and keys that Light up when pressed, or even a built-in trackball mouse that aims to provide an easy way to use both keyboard and mouse without taking your hand off the keyboard.
Mouse - A mouse is a small hardware input device that is used with the hand. It controls the movement of the cursor on the computer screen and allows users to move and select folders, text, files, and icons on the computer. It is an object that has to be placed on a hard flat surface to be used. When users move the mouse, the cursor moves in the same direction on the display screen. Almost every mouse has two buttons, left and right. These buttons are also used to manipulate an object and text. In olden times, the computer mouse had only one button. For example, most early Apple computer mouse included only one button. When a user clicks on a button of mouse, it communicates with the computer to perform an activity on the screen.
Joystick - A joystick is an input device that controls a character or machine in a computer program, such as an aircraft in a flight simulator. They look similar to the control equipment you'd find on arcade games but almost always include additional buttons for added functionality. The picture shows the Logitech Freedom 2.4, an example of a joystick. Most computer joysticks connect to the computer using a USB port. Below is a list of all the types of ports that the joystick accepted.
- Bluetooth
- game port
- serial port
- usb
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