a) Explain the following terms. [3 Marks] i. Informatior technology ii. Computer Memory iii. Operating system b) Discuss the impact of computers in your area of specialization. [4 Marks] c) Explain how the emergence of microcomputers have changed the use technolog in the e-commerce sector. 14 Marks] d) Computer keyboard is grouped into various groups of keys. Explain any three groups of computer keyboard giving examples of keys. [3 Marks] e) Using a well-illustrated diagram explain the major components of computer systems.

a) <br />i. Information technology (IT) refers to the use of computers, networks, storage, and other physical devices, infrastructure, and processes to create, process, store, secure, and exchange all forms of electronic data. IT is typically used within the context of business operations as opposed to personal or entertainment technologies.<br /><br />ii. Computer memory refers to the physical devices used to store data or programs, on a temporary or permanent basis, in a computer. It is a critical component of a computer system, allowing for the storage and retrieval of information.<br /><br />iii. An operating system (OS) is system software that manages computer hardware, software resources, and provides various services for computer programs. It acts as an intermediary between users and the computer hardware.<br /><br />b) The impact of computers in my area of specialization is significant. They have revolutionized the way we work, communicate, and access information. Computers have made it possible to automate repetitive tasks, analyze large amounts of data, and collaborate with colleagues and clients from anywhere in the world.<br /><br />c) The emergence of microcomputers has had a profound impact on the use of technology in the e-commerce sector. Microcomputers have made it possible to develop and implement complex algorithms and data analysis techniques, which have enabled businesses to make more informed decisions. They have also made it possible to develop sophisticated security systems, which have helped to protect sensitive customer information. Additionally, the use of microcomputers has enabled the development of advanced search engines, which have made it easier for customers to find the products they are looking for.<br /><br />d) <br />i. Alphanumeric keys: These keys include letters and numbers and are used for typing and entering data. Examples include the letters A-Z and the numbers 0-9.<br /><br />ii. Modifier keys: These keys modify the normal operation of another key. Examples include the Shift, Ctrl, and Alt keys.<br /><br />iii. Special function keys: These keys perform specific functions within a program. Examples include the F1-F12 keys.<br /><br />e) The major components of computer systems include the central processing unit (CPU), memory, storage, and input/output (I/O) devices. The CPU is the brain of the computer, responsible for executing instructions and performing calculations. Memory, such as RAM, is used to store data and instructions temporarily. Storage, such as hard drives or solid-state drives, is used to store data permanently. I/O devices, such as keyboards and mice, allow users to interact with the computer.