CS 0007 Chapter Notes - Chapter 1: Usability, Java Development Kit, Semicolon
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Output devices: the cpu, cpu (central processing unit): the cpu"s job is to fetch instructions, follow the instructions, and produce some resulting data, 1. Computert programming 0007: fetch, the cpu"s control unit fetches, from main memory, the next instruction in the sequence of program instructions, decode, the instruction is encoded in the form of a number. The control unit decodes the instruction and generates an electronic signal: execute, the signal is routed to the appropriate component of the computer (such as the alu, a disk drive, or some other device). Operating systems: a set of programs that manages the computer"s hardware devices and controls their processes. Most all modern operating systems are multitasking: though a technique called time sharing, a multitasking system divides the allocation of hardware resources and the attention of the cpu among all the executing programs, 2. Applications: a stand-alone program that runs on your computer: ex: word processors, spreadsheets, database managers, and graphics programs, 2.
