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Section B (Paragraph / Problem Type)

All questions can be answered.
Each question carries 5 marks.
(Ceiling 30 marks)
Explain the purpose and use of the parity bit in computer codes. Differentiate between even parity
and odd parity.

Define and give an example of a binary variable in the context of Boolean Algebra.

Describe the concept of storage locations and addresses in computer memory. Explain the structure
of amemory address and its role in data access.

Explain the concept of storage capacity in computer memory. Describe the units used to measure
storage capacity, such as bit, byte, kilobyte, megabyte, and gigabyte. Provide examples of typical
storage capacities for various storage media.

Discuss the purpose of control devices, including lights, buzzers, robotic arms, and motors, as
output devices. Provide examples of scenarios where these devices are used.

Describe the functions and common uses of pointing devices such as a mouse, touchpad, and
trackball.

What type of flowchart symbol is commonly used to represent decision points in program logic ?

Provide an example.
Section C (Essay Type)

Answer any one of the following questions.

The question carries 10 marks.

Explain the importance of the parity bit in error detection during data transmission. Discuss the
concepts of even parity and odd parity and provide examples to illustrate their use in detecting

errors,

Explain the fundamental concepts of Boolean Algebra. Discuss the significance of binary variables
and logic operations in digital circuit design.

(1 x 10 = 10 marks)

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