History of computer
- 2. Computer Definition A computer is an electronic device that can perform variety of tasks according to set of instructions given by the user.
- 3. Abacus is an calculating device. Abacus was developed in china almost 5000 years ago. Abacus
- 4. Blaise Pascal In 1642 the famous French mathematician Blaises Pascal invented a device called “Arithmetic Engine”
- 5. Pascal’s Calculator This was the first successfully mathematical calculator It has complex arrangement of wheels and gears.
- 6. Charles Babbage In 1835 Charles Babbage an English mathematician designed on paper an “analytical engine “.
- 7. Babbage’s Analytical Engine He could not actually produce it because the technology of the time was not advance enough.
- 8. Augusta Ada Byron Ada Byron is the first programmer of the world. She write meaning full code for Babbage's Analytical engine.
- 11. Thousand of Vacuum tube Electromagnetic memory Punched cards used Assembly language
- 12. Machine languages Assembly languages Use in scientific application Bulky in size
- 14. Transistor used Magnetic core memory Magnetic tape as storage Batch processing system
- 15. High level prog. language Electromagnetic memory Scientific purpose Faster then previous
- 17. Integrate circuit-SSI,MSI Magmatic core memory Magnetic tape as storage Batch operating system
- 18. Timesharing operating system Commercial applications Faster – smaller then previous Minicomputers introduced
- 20. Integrated with VLSI Microprocessor Semiconductor memory Spread high-speed computer network
- 21. GUI based operating system Unix operating system C programming language Network based application
- 23. Integrated with ULSI Larger capacity of hard disk Powerful desktop PCs Powerful mainframe
- 24. Word wide web Multimedia application Portable computer General purpose machines