CS 106A Chapter Notes - Chapter 1: Web Server, Java Virtual Machine, Intermediate Representation
20 Aug 2016
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Ch 1: intro: patch panel = pegboard-like device used for eniac (electronic numberical integrator and. Computer: von neumann architecture = modern computers, programs and data could be represented in similar way and stored in same internal memory, 4 generations of development of modern computers. 1st: vacuum tubes for internal circuitry 1939. 2nd: transistor much smaller and less electrical power need than vacuum tubes. 3rd: integrated circuit or chip; compressed transistors together 1964. 4th generation: large-scale integration; put entire processing unit on single silicon chip called microprocessors. Computer science: mainly about the software and problem solving. Hardware: bus = communication channel, cpu = central processing unit. Has integrated circuit = chip of silicon imprinted with many transistors to form larger circuits to carry out operations: memory. Primary storage = function only when computer is on. Usually built on ram = special integrated-circuit chip; random access memory. Allows program to use contents of any memory cell at any time.
