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