1. In what decade did computers first become available to business?
In the early 1950’s.

2.What is the name given to large, expensive and complicated computers?
Mainframes.

3. What is a computer?

A computer is, in essence, a data processing machine

4. What is hardware?

Hardware is the physical equipment that you use, parts you can touch, drop
or break. It includes the computer itself, keyboard, display screen, and
printer.
5.
What is software?
The software is a set of instructions, often called a program or app (application).


6.
What is the name given to the family of application programs which make it possible to write, edit and format text?
Word processing software.


7.
What is the name of the general purpose software which is used to manipulate numbers?
Spreadsheets.

8.What is the name given to the class of software which is used to keep track of data such as Payroll, Inventory, Sales, etc.?
Database management software.

9.What is the name given to software used to develop images?
Graphics application programs.

10.Human beings generally use a decimal numbering system. What is the numbering system called which is used in digital systems?
A binary system.

11. A transistor that is on has the value 1; a transistor that is off has the value 0. What is the term used to describe these values?
Bits.
12
. How many bits in a byte?
8.
13.
How many bytes in a kilobyte?
1,024.

14. How many bytes are available in a computer that has 512mb of memory?
500 million bytes or 1,048,576 x 5 bytes.

15. Approximately how many bytes in a megabyte (MB)?
1 million.

16. How many bytes are there in a gigabyte (GB)?
1 billion.

17. How many bytes in a terabyte (TB)?
1 trillion.

18.What does CPU stand for?
Central Processing Unit.

19. A computer may have two types of internal memory. What are they?
ROM (Read Only Memory) and RAM (Random Access Memory).

20. In the computer industry, what is a ‘port’?
In the computer industry, a port is a socket, usually located at the back of a
computer, which connects the computer to peripherals such as the monitor
and the printer.

21. USB refers to?

Universal Serial Bus.

22. Which is faster USB1, USB2 or USB3?
USB3 which is about ten times faster than USB2.

23. What happens when one key on a manual typewriter is pressed and held down?
On a typewriter, one letter is printed; on a computer, the letters are repeated as long as the key is held down.

24.What is the name given to the standard layout of keyboards most commonly found?
QWERTY, named after the first six keys on the top row of letter keys.

25.What is another name for the return key?
The enter key.

26.What does OCR stand for?
Optical Character Recognition.

27. What is a pixel?
Pixels are the small dots on computer screens which make up text and graphics.

28. What is a light pen?
A light pen is used to draw images directly on a computer screen.
29.
What is a mouse?
A mouse is either a furry rodent or a device containing a roller ball or laser
which is connected by its ‘tail’ to the computer. Unless it is a wireless
mouse. Some laptop computer users dispense with the mouse altogether
and use a keyboard substitute.

30.The following two sentences, taken from The Economist, illustrate the problems still being experienced with what kind of input device to a computer?
– This new display can recognise speech.
– This nudist play can wreck a nice beach.
Voice input. The software is getting better! Have you tries speaking search terms to find sites with Google?

31. List two different kinds of printers.
ink-jet and laser

32. Give two other names for a hard disk drive.
Fixed disk or Winchester disk drive.

33.What is a CD-ROM disk?
A CD-ROM disk is a laser disk that can store the same information as many thousands of floppy disks. DVD disks store more information. New formats such as Blu-ray store, even more, data (50GB on a dual layer disk).

34.What is a WORM?
A WORM is a type of computer virus.

35.What is a modem?
A modem is a device which enables a computer to communicate to another computer via telephone lines. The modem is derived from the words modulate demodulate. Modems can be dial-up or broadband. Some are
wireless.

36.What class of software programs are used to demonstrate images?
Graphics programs.

37.What is the term used to describe that class of program which combines various applications such as word processing, database management, spreadsheets, graphics and communications?
Integrated programs, e.g. Microsoft Office, Open Office.

38.What class of programs make it easy to combine text and graphics, including providing text in columns?
Desktop publishing programs.

39.What is the term used to describe small, generally inexpensive programs that perform a single task and which help to make your computer more efficient?
Utility programs.

40. What is an ASCII file? What do the letters in the term ASCII stand for?
ASCII files are files saved in a standard format which is recognised by all computers and all programs. ASCII stands forAmerican Standard Code forInformation Interchange.