COMPUTER SYSTEMS

International Journal of Modern EngineeringResearch

Computer system is able to communicate more effectively than face-to-face. Computer programs are very important because they transcend mere "data''-they include procedures and processes for structuring and manipulating data. These are the main resources we can now concentrate and share with the aid of the tools and techniques of computers and communication, but they are only a part of the whole that we can learn to concentrate and share. The computer system was a significant aid in exploring the depth and breadth of the material.

1984

Configurations of Operating Systems 2-8 Common Higher Order Languages Used in Microcomputers 3-1 Job Functions of the User Classifications 43 3-2 Characteristics of User Classes 3-3 Clerical User Characteristics and Desirable Syston Attributes 3-4 Administrative User Characteristics and Desirable System Attributes 3-5 Professional User Characteristics and Desirable System Attributes 3-6 Technical User Characteristics and Desirable Syston Attributes 53 vi Chapter 2-Overview of Microcanputers Othe r Technologies Additional mass storage technologies are constantly emerging. Magnetic bubble momory is useful for mass storage in specialized applications where high reliability or low weight are considerations-Its disadvantages are higher cost and limited capacity. Optical disks may be useful for storing large amounts of permanent data, but the technology is still relatively new, and additional work on the basic technology, hardware interfaces, and syston software is necessary for these devices to becane practical for conmon applications. 2.2.3. Keyboards Keyboards are the most conmon input device for curroit microcomputers and may be either an integral part of the case holding the video display or detached. In addition to the letters, numbers, punctuation, and special symbols typically found on typewriter keyboards, some microcomputer keyboards have special function keys. These keys allow the user to manipulate the display, memory, programs, or peripheral devices. Numeric keypads (i.e. those resembling adding machine keyboards) and cursor control keys (see section 2.2.5) are also found on many microcomputers keyboards, 2.2.4. Other Input Devices Keyboards may be supplonented by other input devices including pointing devices, digital to analog converters, and voice input. Pointing devices enhance operator convenience in such operations as making a choice from a list of options or indicating data to be acted on (e.g. designating a paragraph to be deleted from a document) and for performing graphics operations. Table 2-4 lists pointing devices which are commonly used for microconputers. 144

A Computer is machine that performs tasks, such as calculations or electronic communication, under the control of a set of instructions called a program. Programs usually reside within the computer and are retrieved and processed by the computer’s electronics. The program results are stored or routed to output devices, such as video display monitors or printers. Computers perform a wide variety of activities reliably, accurately, and quickly.

 Differentiate between port, expansion slot and expansion card  Explain the input/output, processing and storage operations  Define operating system, device drivers, utility programs and language processors  Identify the use of productivity, business, entertainment and education software  Elaborate open source software, shareware and freeware UNIT INTRODUCTION This Unit "Fundamentals of Computer" covers a foundational understanding of computer hardware and software along with how to get the most value and impact from computer technology. In this unit the history of computer is described so that students can understand how have computers evolved from very simple calculating devices to the modern electronic computing. It also provides material on application of computers in various fields to describe the role of computer in modern society and its impact on our daily life. 1 9 1 Fundamentals of Computer TITBITS Abacus is still seen at some toy shops, made of plastic or wood for small children.

Minds and Machines, 2018

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