PRELIM COMPUTER What is a Computer? A computer is an electronic machine that can be programmed to accept data (input)‚ process it into useful information (output)‚ and store it in a storage device for future use Characteristics of a Computer •It’s a machine. •It is electronic. •It is automatic. •It can manipulate data. •It has memory •It has logical function Capabilities of a Computer • Speed • Accuracy • Repetitiveness • Storage • Programmable Limitations of a Computer • Cannot operate without
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HISTORY OF COMPUTERS The abacus was an early aid for mathematical computations. Its only value is that it aids the memory of the human performing the calculation. A skilled abacus operator can work on addition and subtraction problems at the speed of a person equipped with a hand calculator. The abacus is often wrongly attributed to China. In fact‚ the oldest surviving abacus was used in 300 B.C. by the Babylonians. The abacus is still in use today‚ principally in the far east. A modern abacus
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often questionable. 5 | Also it could have a possibility of giving the user poor eyesight as from the light emitted by the screen of the device‚ such as I pads‚ E pads‚ Computer or phones. The users would be straining their eyes to adjust to the light level in order to read the content properly. 9 | A thousand? Two thousand? If so how much books can you buy with
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introduction to the basic concepts related to the computing field. It also provides you the brief and clean introductory class about various types of the computers. Author: Ali Asghar Manjotho 12/25/2007 A word about the Author and the Book This book is written‚ composed‚ and organized by Mr. Ali Asghar Manjotho — studying at Computer Systems Engineering Department under the kind umbrella of Mehran University of Engineering and Technology Jamshoro bearing the roll number (07CS20). He started
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presents the background of the study‚ problem and its significance‚ and the scope and limitation of the study. Background of the Study In this Information Age we are able to process or transmit‚ sort and retrieve data or information between one computer to another. With this‚ it makes the communication and different task done easy and less time consuming and hassle free. Like in schools‚ offices this brings a big help. In schools especially in colleges/universities it is consist of different people
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Computer Applications 1) A computer can be defined as a set of tools that helps you perform information-processing tasks. A) True B) False 2) Computer hardware includes monitors‚ disk drives‚ processors‚ and the operating system A) True B) False 3) A user interface is a combination of software and hardware. A) True B) False 4) A keyboard‚ mouse‚ and an Internet video camera are considered forms of A) output devices. B) scanning devices. C) pointing devices. D)
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Introduction The memory unit is an essential component in any digital computer since it is needed for storing programs and data. Main Memory The memory unit that communicates directly with the CPU is called the main memory. Auxiliary Memory Devices that provide backup storage are called auxiliary memory. The most common auxiliary memory devices used in computer systems are magnetic disks and tapes. The part of the computer system that supervises the flow of information between auxiliary and main
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Task-1 Aim: To Identify the peripherals of a computer‚ components in a CPU and its functions. Draw the block diagram of the CPU along with the configuration of each peripheral and submit to your instructor. Description of the Computer Components: "computer" is a collection of devices that function as a unit. The most basic collection includes a Computer CPU‚ a Monitor‚ a Keyboard‚ and a Mouse. The Computer CPU is normally a rectangular box that sits on your desktop (called a "Desktop Case")
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ELEMENTS OF COMPUTER SYSTEM Computer System Is a complete‚ working computer. The computer system includes not only the computer‚ but also any software and peripheral devices that are necessary to make the computer function. 1. Hardware 2.Software 3.Peopleware / Live ware HARDWARE It is best described as a device that is physically connected to your computer or something that can be physically touched. INPUT DEVICE –any device that allows the person to communicate information to the computer / gives
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1) Name each of the six components of a computer system and indicate the function of each. 1) Primary Storage- Refers to internal memory where data to be processed and stored for access by the CPU 2) Secondary Storage- Needed for any extra storage that can not be held in the primary storage 3) Storage Volume- The actual secondary storage required for captured and archived data in a healthcare enterprise is massive. 4) Physical Security- Complience with regulatory and legal requirements 5) Input
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