Download as PDF, PPTX
Uploaded byThe University of Lahore
Computer and Examples , History of Computer
This document provides an introduction to computers including definitions, examples of applications, and a brief history. It defines a computer as an electronic device that processes data and converts it into information by running programs. Examples of computer applications include controlling space flights, landing airplanes, tracking inventory, and printing books. The history discusses early aids like the abacus, followed by developments such as Pascal's calculator, Babbage's analytical machine, ENIAC as the first electronic digital computer, von Neumann's stored program concept, the first computer for commercial use (UNIVAC), and 1970s-80s advancements.
More Related Content
Similar to Computer and Examples , History of Computer
Computer and Examples , History of Computer
- 1. Lecture no :1 Introduction to Computer/ Computer Education Mr. Muhammad Moazzam MPhil Public Health BSc BioMedical University of the Lahore
- 2. Contents • Introduction toComputer • Computer and Examples • History of Computer
- 3. Introduction to Computer •Consider this sentence: ‘’Computers are everywhere.’’ • Computer are so common in modern society that everyone is affected by computer technology to some extent • It was originally invented to do speedy and accurate calculations, it can be used for other purposes too
- 4. Introduction to Computer •In past two decades, computers have reshaped our lives at home, work and school • In fact, you can find computer almost everywhere. Microwave ovens and wristwatches also contain computer chips
- 5. Computer A computer isan electronics device that processes data and converts it into information Computer run programs, which process data and perform tasks based on the instruction contained in the program
- 6.
- 7. Contd. • Because acomputer program can evaluate data and then based on those evaluation, results are generated which can be used for large number of applications • Computer can process data with litter assistance
- 8. Examples of Computerapplications: • Controlling space flight
- 9. Examples of Computerapplications: • Landing airplanes
- 10. Examples of Computerapplications: • Tracking inventory
- 11. Examples of Computerapplications: • Printing books
- 12. Examples of Computerapplications: • Turning on lights at a specified time
- 13. Examples of Computerapplications: • Checking out groceries at the checkout counter
- 14. History of Computer •Originally calculations were computed by humans, whose job title was computers • These human computers were typically engaged in the calculation of a mathematical expression. • The calculations of this period were specialized and expensive, requiring years of training in mathematics • The first use of the word "computer" was recorded in 1613, referring to a person who carried out calculations, or computations, and the word continued to be used in that sense until the middle of the 20th century
- 15. History of Computer 1-Abacus: • The computer history start out about 500 years ago with the birth of the abacus • The abacus was an early aid for mathematical computations • The abacus , also called a counting frame, is a calculating tool that was in use in Europe, China and Russia
- 16. Abacus • A skilledabacus operator can work on addition and subtraction problems at the speed of a person equipped with a hand calculator
- 17.
- 18. 2-Pascal’s Calculator: • Fatherof modern Calculators • Built for Etienne Pascal, his father a accountant for the King of France • Prove to society that human brain power can be artificially produced by machine • Pascal (17th century) inverted a machine that a system of gears.It is the first numerical calculating machine that can add and subtract
- 19.
- 20. 3-Charles Baggage: • 1833Charles Baggage desings the analytical machine that follows instructions from punched cards • Charles’machine calculating and printing mathematical tables like they were used in the navy
- 21.
- 22. 4-Electronics Digital Computers: •Start of World War 2,need large number of calculations for made new weapons. • 1942 John W.Machly and their associates decided to build a high speed electronic computer to do the job. • This machine was known as ENIAC • ENIAC stands for Electronic Numerical Integrator and Computer.
- 23.
- 24. 5-The Modern StoredProgram: • Von Neumann contributed a new awareness of how practical and fast computers should be built. These ideas known as stored-program techniques
- 25. Von Neumann’s Theory: ‘’Dataand program can be stored in the same memory.Thus,the machine can itself alter either its program or internal data.’’
- 26. 6-Univac • The UNIVAC(Universal Automatic Computer) computer was made in 1951. • This computer was faster and smaller than ENIAC • This is first computer for commercial use
- 27. 7-1970’s Advancement inComputer: • In 1970’s-1980’s,more development happened in computer like reduce size, use very large scale transistors in one chip • In 1980’s ,Japanese announced a big plan to design and build a new generation of computer • The cost of computer is rapidly lessening and efficiency are expected to increase in the early future