(a) (i) State three ways of classifying computers. (ii) Differentiate between digital and analog computers. (b) List three positive impacts of ICT on the so...

Answer Details

(a)

(i) Three ways of classifying computers are:

• By size: supercomputers, mainframe computers, mini computers, microcomputers.
• By purpose: personal computers, servers, embedded systems, gaming systems, scientific and engineering computers.
• By generation: first generation, second generation, third generation, fourth generation, fifth generation.

(ii) Digital computers use discrete values (usually binary digits) to represent data and perform calculations, while analog computers use continuous physical quantities (such as voltage or current) to represent data and perform calculations.

(b)

Three positive impacts of ICT (Information and Communication Technology) on society are:

• Improved communication: ICT has made it easier and faster for people to communicate with each other across different locations and time zones through email, video conferencing, social media, and messaging apps.
• Increased access to information: The internet and digital libraries provide access to vast amounts of information on various topics, making education and research more accessible.
• Improved productivity: ICT has made it possible to automate many tasks, leading to increased efficiency and productivity in industries such as manufacturing, finance, and healthcare.

(c)

Two types of information transmission medium are:

• Wired: Transmission through physical cables, such as copper wires, fiber optic cables, or coaxial cables. Wired transmission is usually more secure and faster than wireless transmission, but it can be limited by the length of the cables.
• Wireless: Transmission through the airwaves, such as Wi-Fi, Bluetooth, or cellular networks. Wireless transmission provides more mobility and flexibility, but it can be subject to interference and security issues.