Answer:

a)Memory refers to the processes that are used to acquire, store, retain, and later retrieve information. There are three major processes involved in memory: encoding, storage, and RETRIEVAL. Human memory involves the ability to both preserve and recover information we have learned or experienced.

b)An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file MANAGEMENT, memory management, process management, handling input and OUTPUT, and controlling peripheral devices such as disk drives and printers

c)A computer program is a collection of INSTRUCTIONS that can be executed by a computer to perform a specific task. A computer program is usually written by a computer programmer in a programming language. ... A collection of computer programs, libraries, and related data are referred to as software.

d)Information is a processed, organised data presented in a given context and is useful to humans. Data is an individual unit that contains raw material which does not CARRY any specific meaning. Information is a group of data that collectively carry a logical meaning. Data doesn't depend on information.