Match each of the following terms to the phrase that is the most closely related

1. binary code, 2. ASCII, 3. backup file, 4. byte, 5. diskette, 6. write/protect notch, 7. read/write head, 8. hard disk, 9. EBCDIC, 10. sequential storage and retrieval,

11. removable disk pack, 12. tracks, 13. gigabyte, 14. cartridge-tape drive, 15.

sector, 16. direct access.

a. This hardware device is a more efficient alternative to diskettes for backing up the contents of hard disks.

b. Storage device typically used with mainframe computers

c. Pie-shaped "wedge" used for storage reference purposes

d. Unit of measurement approximately equal to a character

e. A billion bytes

f. Circular bands used for storage purposes

g. When this is covered, data cannot be written onto a diskette

h. Copy of an original file

i. Scheme for encoding data using a series of binary digits

j. Data-retrieval method best used in situations in which only a few records in a file need to be accessed

k. Direct access storage device used with microcomputers that has a much greater storage capacity than diskettes

l. Coding scheme widely used to represent data in microcomputers

m. Inexpensive storage device used with microcomputers

n. This coding scheme is widely used to represent data in mainframe computers.

o. This component of a disk drive can convert magnetic spots to electrical impulses, and vice versa.

p. With this approach, data is retrieved in the sequence in which it was recorded,

Answer the questions.

1. What is the difference between primary and secondary storage?

2. What are the advantages of a hard disk over a diskette?

3. How is data represented in primary and secondary storage devices?

4. What is a mass storage system?

5. How can you damage your diskette?

6. What is the significance of the terms track and sector?

7. What happens to the data saved in secondary storage when the power to a computer is turned off?

8. How does the direct access storage and retrieval method relate to diskettes and hard disks?

9. Why does transferring data between a microcomputer and a mainframe computer require special hardware and software?

10. Define what a file is by describing the data storage hierarchy.

V. Discuss the following with your groupmates.

What type(s) of storage hardware is currently being used in the computers at your college? What is the storage capacity of this hardware? Would you recommend alternate storage hardware be used? Why? Why not?

 

Практическое занятие №8

Тема: Устройства обработки данных.

Processing Hardware

I. First thoughts. What pieces of hardware belong to processing hardware? Which is the most important one? Why?

II. Study the words. Make sure you know them. Practice the pronunciation.

Add-on memory board, addressing scheme, clock, closed architecture, open architecture.