Answer:
a. Computer memory is measured in bytes - a unit of digital information storage. Usually, computer memory is referred to as Random Access Memory (RAM), and its size is usually measured in gigabytes (GB). b. Input devices are used to input data into the computer system, for example, keyboard, mouse, scanner, and microphone. Output devices display and present data to the user, for example, monitor, printer, and speakers. Storage devices are used for storing data, for example, hard disk drive, solid-state drive, and USB drive. First-generation computers were large, bulky, and expensive, using vacuum tubes as their main components to process data. They were not user-friendly and lacked programming languages. Second-generation computers were faster, smaller, and cheaper than their predecessors. They used transistors in place of vacuum tubes, which reduced power consumption and generated less heat. They also used programming languages like COBOL and FORTRAN.
c. Fourth-generation computers were smaller in size and used microprocessors for processing data. They were characterized by faster speed, increased storage capacity, and cost-effectiveness. Fourth-generation computers could also support multitasking and multi-user operations. Fifth-generation computers are currently being developed, aiming at creating machine intelligence based on natural language processing, AI algorithms, and advanced parallel processing. They are expected to be able to learn from experience and understand and interpret human speech and natural language.
Overall, the evolution of computers has led to an exponential increase in both computing power and accessibility to users, as well as the use of more efficient and compact hardware devices.
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