TAILIEUCHUNG - Lecture Operating system concepts - Lecture 2
The main contents of this chapter include all of the following: Computer system operation, I/O structure, storage structure, storage hierarchy, hardware protection, general system architecture. | CSC 322 Operating Systems Concepts Lecture -2: by Ahmed Mumtaz Mustehsan Special Thanks To: Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. (Chapter-1) Ahmed Mumtaz Mustehsan, CIIT, Islamabad 1 . 4th Generation (1980–Todate) PC, Tablets, Phones LSI (Large Scale Integration) circuits chips, thousands of transistors on a square centimeter, that produced PC initially called microcomputers Performance like mini computers but very low in price. In 1974, Intel introduced 8080, First 8-bit CPU, which needed OS, Intel asked Gary Kildall, to write one. Kildall built a controller for 8-inch floppy disk and linked with 8080, then wrote a disk-based operating system called CP/M (Control Program for Microcomputers) Kildall then formed a company, named Digital Research, to further develop and sell CP/M. Ahmed Mumtaz Mustehsan, CIIT, Islamabad MULTICS Timesharing CTSS (MIT) Multics UNix . Features of 4th Generation computers In 1977, Digital Research rewrote CP/M also for .
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