CSCI Exam 2 Chapter 13

This is used in the United States: IRA ASCII EBCDIC

ASCII

This Operand cannot be easily stored or transmitted by data processing and communications systems because they are designed for binary data. Numbers Characters Addresses Logical Data

Characters

Test instructions are used to test the value of data word or the status of a computation: Data storage Control Data movement Data processing

Control

I/O instructions are needed to transfer programs and data into memory and the results of computations back out to the user: Data storage Control Data movement Data processing

Data movement

This handles arithmetic instructions and logic (Boolean): Data storage Control Data movement Data processing

Data processing

Movement of data into or out of register and or memory locations: Data storage Control Data movement Data processing

Data storage

This is used on IBM mainframes: IRA ASCII EBCDIC

EBCDIC

This is the most commonly used character code: IRA ASCII EBCDIC

IRA

The operation of the processor is determined by the ______________ it executes. Instructions Programs I/O devices Operands

Instructions

An n-bit unit consisting of n 1-bit items of data, each item having the value 0 or 1: Numbers Characters Addresses Logical Data

Logical Data

In the instruction format (ADD R, Y) What does Y represent? The register Instruction Memory address The value

Memory address

________ are represented by abbreviations called mnemonics. Operands Opcodes Operations Instructions

Opcodes

How many types of Operands are there? 2 4 3 5

4

Opcode is _____ bits. 6 8 4 2

4

Operand Reference is ____ bits. 6 8 4 2

6

In the instruction format (ADD R, Y) What does R represent? The register Instruction Memory address The value

The register

All machine languages include numeric data types. True False

True

Binary integer or binary fixed point, binary floating point, and decimal are all types of numerical data that are common in computers. True False

True

Double word has two words. True False

True

In order to form numbers, 4-bit codes are strung together, usually in multiples of 8 bits. True False

True

In the instruction format (ADD R, Y) we are adding the value contained in data location Y to the contents of register R. True False

True

Main/Virtual memory, I/O device, processor register, and immediate are all places that source and operands can be in. True False

True

Numbers stored in a computer are limited. True False

True

One byte has eight bits. True False

True

One word has two bytes. True False

True

Quad word has four words. True False

True

There are 4 instruction types True False

True