Letter Tube Preparation Knowledge Point explaining • Addressing method of computer hardware Foundation

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? Following the Greek Soft Test Institute to learn information Systems Management Engineer computer hardware base on addressing methods to focus on the content.

Information System Management Engineer preparation for the knowledge point explaining addressing method

Immediate addressing: is a special way of addressing, the part of the instruction after the opcode field is not the usual meaning of the operand address, but the operand itself, that is, the data is contained in the instruction, as long as the instructions are taken out, you can immediately use the operand.

Direct addressing: in the direct addressing, the Address Code field given in the instruction is the valid address of the operand, that is, the form address equals the valid address.

indirection : Indirect addressing means that the address a given in the instruction is not the address of the operand, but rather the address of the primary cell that holds the operand address, or the address of the operand address.

Register Addressing: the address code portion of the Register addressing instruction gives the number RI for a general register, which holds the operand in the specified register.

Register indirection: in the Register indirection, the register is stored in the address of the operand, not the operand itself, that is, the operand is indirectly obtained through the register.

Letter Tube Preparation Knowledge Point explaining • Addressing method of computer hardware Foundation