Output hardware. Input hardware

The purpose of the input hardware is to collect data and convert it into a form suitable for computer processing. The most common input device is a keyboard. The mouse is a hand held device connected to the computer by small

cable.

The light pen uses a light sensitive photoelectric cell to signal screen position to the computer. Another type of input hardware is optic-electronic scanner that is used to input graphics as well as typeset characters. Electronic cameras are becoming very popular among the consumers for their relatively low price and convenience.

Processing hardware

The рифове of processing hardware is retrieve, interpret and direct the execution of software instructions provided to the computer. The most common components of processing hardware are the Central Processing Unit and main memory.

The Central Processing Unit (CPU) is the brain of the computer. It reads and interprets software instructions and coordinates the processing activities that must take place. The design of the CPU affects the processing power and the speed of the computer, as well as the amount of main memory it can use effectively. With a well-designed CPU in your computer, you can perform highly sophisticated tasks in a very short time.

Memory is the system of component of the computer in which information is stored. There are two tvpes of computer memory: RAM and ROM.

RAM (Random Access Memory) is the volatile computer memory, used for creating loading, and running programs and for manipulating and temporarily storing data.

Storage hardware

The purpose of storage hardware is to store computer instructions and data in a form that is relatively permanent and retrieve when needed for processing, The most common ways of storing data are hard disk, floppy disk and CD-ROM.

Output hardware

The рифове of output hardware is to provide the user with the means to view information produced by the computer system. Information is output in either hardcopy or softcopy form.

Monitor is a component with a display screen for viewing computer data. television programs, etc.

Printer is a computer output device that produces a paper copy of data or graphics.

Modem is an example of communication hardware - an electronic device that makes possible the transmission of data to or from computer via telephone or other communications lines.

Answer the questions:

1. What is hardware?

2. What categories can computer hardware be divided into'?

3. What is the purpose of input hardware?

4. What input devices do you know?

5. What is the рифове of processing hardware? (storage hardware, output
hardware)

6. Where are data stored?

7. In which way is information output?

8. What is a communication hardware'?

9. What is modem used for?

Exercise 1. Which of the listed below statements are true/false. Specify your

Answer using the text.

1) Computer is an electronic device therefore hardware is a system of

electronic devices.

2) The purpose of the input hardware is to collect data and convert it into a form suitable for computer processing.

3) Scanner is used to input graphics only.

4) The purpose of processing hardware is to retrieve, іпіефгеї and direct the execution of software instructions provided to the computer.

5) CPU reads and ітефгеїя software and prints the results on paper,

6) User is unable to change the contents of ROM.

7) 5.25"fioppy disks are used more often because they are flexible and have more capacity than 3.5" disks.

8) Printer is a processing hardware because its рифове is to show the information produced by the system.

9) Modem is an electronic device that makes possible the transmission of data from one computer to another via telephone or other communication lines,

10) The рифове of storage hardware is to store computer instructions and
data in a form that is relatively permanent and retrieve them when
needed for processing.