Question No. 1 What is data ? What is the output of data processing system ?
Answer Data are raw facts and figures. Data processing system transforms data into useful information.
Question No. 2 State the basic units of the computer , Name the submits that make up the CPU, and give the function of each of the units.
Answer The basic units of a computer are:
- Input Unit
- Central Processing Unit (CPU)
- Output Unit
The CPU has two sub units : the control unit (CU) and the arithmetic logic unit (ALU).
The control unit controls the entire operation being carried out.
The ALU performs the arithmetic and logical operations.
Question No. 3 What is the funtion of memory ? What are its measuring units ?
Answer The memory temporarily holds the data and information during processing.
The smallest unit of memory is a byte (8 bits). A byte can store one character in binary form.
Other measuring units are kilobyte (KB) equal to 1024 (2) bytes, Megabyte (MB) equal to 1024 KB and Gigabyte (GB) equal to 1024 MB.