erUNIT 1 INTRODUCTION TO COMPUTERS Structure 1.1 1.2 1.3 Introduction Objectives Introduction to Computers Why Computer? Evolution of Computers 1.3.1 The First Computer 1.3.2 Some Well Known Early Computers 1.3.3 Computer Generations 1.4 1.5 1.6 1.7 1.8 1.9 Components of a Computer Hardware vs Software System vs Applications Software Bits and Bytes Input and Output Devices RAM/ROM 1.10 Secondary Storage Devices 1.11 Summary 1.12 Answers to SAQs 1.1 INTRODUCTION This unit aims
Premium Computer Computer data storage
LexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexiLexi
Premium Computer Computer data storage Central processing unit
COMPUTER REVOLUTION Personal Computers The personal computer revolution was a phenomenon of immense importance in the 1980s. What the average American commonly refers to as a PC‚ or personal computer‚ did not even exist before the 1970s. Mainframe computers had been the norm‚ and they were primarily relegated to business and scientific use. With the dawn of the personal computer all Americans were allowed potential access to computers. As competition and modernization increased‚ issues of cost
Premium Personal computer
What is a computer: A computer is an electronic device that executes the instructions in a program. A device that accepts data‚ processes the data in accordance with the stored program‚ generates results and usually consists of input‚ output‚ storage‚ Airthmatic logic and control units. A computer has four functions: a. accepts data Input: Data or information written into the computer by user The Information Processing Cycle b.processes data Processing: The calculations performed according
Premium Computer data storage Hard disk drive Computer
Computer Memory Memory: Your memory does not store everything forever. The computer memory refers to computer components‚ devices and recording media that retain digital information. The computer data storage provides one of the core functions of a computer that of information retention. How a Computer Remembers: A computer has two memories‚ called RAM and ROM. ROM stands for Read Only Memory. It carries the information. The computer needs to carry out‚ it’s task‚ and it cannot be altered
Premium Computer data storage Computer Data storage device
Assignment 1: Computer Archtecture Intro to Info Technology – CIS 106031VA016-1144-001 Professor John Murnane May 4‚ 2014 Von Neumann Architecture Von Neumann architecture is a stored program architecture with no differentiation between data and instruction memory. Both the data and instruction reside on a single chip. The concept of no differentiation between data and instruction memory is accurate‚ but existing on one chip has nothing to do with it. Most computer memories
Premium Computer Computer data storage
device of a computer where all data is saved. Hard drives are non-volatile which allows the data to be saved even when the computer is shut down. “Although most hard drives are internal hard drives‚ many users also use external hard drives to backup data on their computer and expand the total amount of space available to them”( "What Is Hard Drive?" Computer Hope. Web. 14 Sept. 2014.) The first Hard Drive was released by IBM in 1956. Random Access Memory (RAM): Another form of computer storage‚
Premium Computer data storage Hard disk drive Computer
Plan : Introduction to Computers Teacher Name: Toni Padgett Grade: Grade 9-10 Subject: Vocational Ed. Topic: Our World of Computers Content: What is a computer? -Components -Power -Networks and the Internet -Categories of Computers -Computer Applications in Society Goals: To help students understand the relevance of computers in our society. To help students understand the vaious components of the computer. To help students understand the power of a computer. To help students understand
Premium Computer Computer software Computing
review‚ analysis of promotions‚ transfers‚ and performance of its executive openings through screening analysis. 6. Help identify high performers whose promotions have been blocked for more than two (2) years. Other uses of computers or ICT in organisations are; Computers are able to provide the right information at the right time in response to a variety of managerial needs on personnel. 1. Labour Turnover –Data on employee headcount and leaves help provide rates of labour turnover and identify
Premium Human resources Human resource management Computer
THE VALUE OF COMPUTER EDUCATION TODAY Necessity is the mother of revolution. The saying holds true for computers also because computers were invented as a result of a main search for a fast and an accurate calculating device. A few days ago there were only few computers in our country. They were enormous and expensive machines. Although abacus was invented around 600 B.C. It is interesting to know that it can calculate at an amazing speed. The first mechanical adding machine was invented by Blaise
Premium Computer Computer program Personal computer