Letter Tube Prep Knowledge Point explaining • Instructions for computer hardware basics

The Information System Management Engineer is an intermediate examination in the National computer Technology and software Professional Technical Qualification Examination (hereinafter referred to as the Software Qualification examination). The examination of Information System Management engineer requires examinee to master the relevant knowledge content of computer system, operating system, database, computer network, informationization and information system. The Information System Management Engineer Exam requires a wide range of content, and what are the key points to be mastered during preparation? Below follow the Greek Soft Test Institute to learn information Systems Management Engineer Computer Hardware Basic instructions to focus on the content.

Information Systems Management Engineer preparation for Knowledge Point explaining instructions

1. Instruction Related Concepts

directive: An instruction is a statement of the machine language, which is a set of meaningful binary code, the basic format of the instruction is as follows:

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The Operation code part: Indicates what kind of operation the computer wants to perform, such as addition, subtraction, fetch number, deposit number, etc.

Address Code field: Need to include the address of each operand and the address of the operation result, etc., from its address structure angle can be divided into three address instruction, two address instruction, one address instruction and 0 address instruction

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Instruction Flow: Refers to a sequence of instructions executed by a computer

Data flow: Refers to the data sequence called by the instruction stream

Multiplicity: The number of instructions or data processed by the computer at the same time

2, CISC and RISC

The basic idea of the complex instruction set computer (CISC) is to further enhance the function of the original instruction, replace the function of the software subroutine with more complicated new instruction, and realize the hardening of the software function, which makes the instruction system of the machine become larger and more complex.

The basic idea of the simplified instruction set computer (RISC) is to reduce the complexity of the hardware design by reducing the total number of instructions and simplifying the instruction function, so that the instruction can be executed in single cycle, and by optimizing compiling, improving the execution speed of the instruction, using the hard line control logic and optimizing the compiling program.

Letter Tube Prep Knowledge Point explaining • Instructions for computer hardware basics