ICS

Question 1

Nibble

Answer 1

4 bits

Question 2

2’s complement

Answer 2

2^n - N. Sign bit has 2 representations of 0

Question 3

Word

Answer 3

Number of bits a system operates with

Question 4

Numerical Precision

Answer 4

Number of digits to represent a number. Multiple of the smallest bit

Question 5

Floating Point

Answer 5

Represent a number in standard form and then an 8 bit number

Question 6

Control Unit

Answer 6

Decides where information comes in

Question 7

ALU

Answer 7

Arithmetic and Logical Unit. Does math operations

Question 8

Program Counter

Answer 8

Stores address of next instruction

Question 9

Accumulator

Answer 9

Stores the result of the operation

Question 10

Control Bus

Answer 10

Connects the CPU to other devices

Question 11

Address Bus

Answer 11

Communicates the memory locations

Question 12

I/O

Answer 12

Input and Output of the computer

Question 13

Clock Cycle

Answer 13

Square-wave signal to synchronise computer actions

Question 14

Fetch

Answer 14

Read PC, load instruction, update PC

Question 15

Analytical Engine

Answer 15

Mechanical general purpose computer

Question 16

Linking

Answer 16

Program that links code with other called code

Question 17

Parsing

Answer 17

Checks syntax, extract information, variables

Question 18

Loader

Answer 18

Loads the program and data into the memory

Question 19

Interpreter

Answer 19

Program which performs code without converting to machine code

Question 20

Java Virtual Machine

Answer 20

Provides security and platform independence

Question 21

Passing by Value/Reference

Answer 21

Value is always the same, but reference can be changed

Question 22

Symbolic Reference

Answer 22

Text reference to a variable

Question 23

Local Variable

Answer 23

A variable only in a method

Question 24

Static Method

Answer 24

Can be ran without and instance of the class

Question 25

Slot Number

Answer 25

Memory locations of stored values

Question 26

Orders of Growth

Answer 26

Worst case scenario of how long a program takes to run

Question 27

Nondeterministic

Answer 27

Output is not known definitely, from a list of possible values.

Question 28

Checking Correctness

Answer 28

Testing, Formal verification, By contract

Question 29

Defensive

Answer 29

In public methods, defends against mistakes and malicious attacks

Question 30

Invariant

Answer 30

Predicate during execution

Question 31

Instance invariant

Answer 31

Predicate of instance variables

Question 32

Maintain Invariants

Answer 32

Invariant in constructors, re-established in methods