Carries results information from the computer the user
|
---|
1 | A set of instructions that a computer needs to carry out its tasks is known as a program . | ||
2 |
|
||
3 |
|
||
4 | A computer system consists of both hardware and software . | ||
5 | Processing takes place in that part of the computer known as the | ||
|
. | ||
6 | The control unit (CU) directs and coordinates all the activities within the CPU. | ||
7 | A machine cycle is the sequence of instructions performed to execute one program |
8 |
---|
9 |
---|
10 |
Output devices translate information processed by the computer into a form that the user |
---|
1 | Data and information are the same. |
|
|||||||
2 | Computer science is the study of both computer hardware and software design. |
|
|||||||
3 | |||||||||
4 |
|
|
|||||||
5 | The CU sends data from the memory to the ALU for processing. |
|
|||||||
6 |
|
||||||||
understand. |
|
||||||||
7 | |||||||||
8 | Input, processing and output are the three stages of data processing. |
|
|||||||
9 |
|
---|
|
|
---|---|
1 |
1 |
a The study of data, data processing and information management
b The use of computer hardware, software and telecommunications devices to store, manipulate, convert, protect, send and receive data
2 | ||||||
---|---|---|---|---|---|---|
a Keyboard | b Mouse | |||||
|
d Speakers | |||||
3 | ||||||
|
||||||
|
|
|||||
4 | ||||||
b Control unit | ||||||
|
||||||
5 | ||||||
|
|
|||||
6 |
|
|||||
|
|
|||||
7 |
|
|||||
|
||||||
8 | c gigabytes. | d terabytes. | ||||
9 | |||
---|---|---|---|
|
|||
|
|||
|
|||
|
|
||
|
d Enhanced productivity |
1 |
2 |
|
---|
3 |
|
---|
4 |
|
---|
5 |
|
---|
6 |
|
---|
|
---|
7 |
---|
8 |
|
---|
9 |
---|
a Input device
b Output device
|
---|
|
---|
|
---|
|
---|
a Explain TWO ways in which technology can be used to assist the teacher.
|
---|
|
---|
1 |
|
---|
2 |
|
|||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
b | |||||||||||||||
d |
|
---|
3 |
|
---|
|
---|
|
---|
|
---|
|
---|
|
|
---|---|
1 | |
2 | |
3 | |
4 |
|
|
---|---|
5 |
|
6 | |
7 |
|
|
---|
1 | |
2 |
3 |
|
---|
An embedded computer is a special-purpose computer that is used inside a device to |
|
---|
10 The vacuum tube or valve was the main electronic component of first -generation computers. |
---|
1 | A laptop computer is a portable version of a PC. |
|
|||||||||
2 | Notebooks are just as powerful as a desktop PC. |
|
|||||||||
3 | Notebooks cost less than a desktop PC. |
|
|||||||||
4 | A mainframe can handle more than a thousand users at one time. |
|
|||||||||
5 | An embedded computer is housed on a single microprocessor board. |
|
|||||||||
6 |
|
||||||||||
7 | High-level programming languages were used in third-generation computers. |
|
|||||||||
8 | Fifth-generation computers use ultra-large-scale integration (ULSI) chips. |
|
|||||||||
9 | The Cray T3E 900 and GRAPE are examples of personal computers. |
|
|||||||||
10 The most popular computers today are mainframe computers. |
|
||||||||||
|
9 |
1 | |||
|
|||
|
|
||
2 | |||
|
|||
3 |
|
||
|
|||
|
|||
4 | |||
|
|||
|
|
||
5 | |||
|
|||
6 |
|
||
|
|||
|
|||
7 |
|
|
||
---|---|---|---|
|
|||
8 | |||
|
b an embedded computer. | ||
9 | |||
|
|||
|
|||
|
d netbook computer. |
|
||
|
|
1 |
2 |
|
---|
3 |
|
---|
|
---|
4 |
|
---|
5 |
|
||
---|---|---|---|
a |
|
6 |
|
||
---|---|---|---|
a |
|
---|
7 |
|
---|
8 |
|
||
---|---|---|---|
a |
|
---|
|
|
---|---|
1 |
b | ||
|
d |
|
2 |
|
---|
|
---|
3 |
|
---|
|
---|
|
|
---|---|
2 |
|
3 |
1 |
|
4 |
|
5 | A computer that can be tucked easily into a briefcase or backpack, or simply under your arm (8) |
Questions and answers 3
|
|
---|---|
1 |
operation are called peripherals . | |
---|---|
The first stage of getting data into a computer is known as data capture . Documents on which data is first recorded before it is entered into a computer are known as |
An ergonomics keyboard is designed for comfort and usability. |
1 | Input devices are pieces of equipment that are used to put data into the computer. |
|
||||
2 | Data can only be entered manually into a computer. |
|
||||
3 | Source documents are documents that are output by the computer. |
|
||||
4 |
|
|||||
5 |
|
|
||||||
---|---|---|---|---|---|---|
|
An OCR reader can only read typed documents. |
|
||||
A stylus is a pen-like pointing device for a graphics/digitising tablet. |
|
|||||
OMR readers are used for assessing multiple-choice examinations or questionnaires given out | ||||||
by market researchers. |
|
|||||
A sound card is used to digitise sound information into a form that the computer can | ||||||
understand. |
|
|
|
1 | ||
|
||
|
||
2 | ||
|
|
|
3 | ||
|
||
4 |
|
|
5 |
|
|
|
||
6 |
7 |
|
|
---|---|---|
|
||
|
---|
1 |
|
|
---|
2 |
---|
b Data capture
|
---|
3 |
|
||
---|---|---|---|
a |
|
4 |
|
---|
|
---|
|
---|
5 |
|
---|
6 |
|
---|
|
---|
7 |
|
||
---|---|---|---|
|
|
||