ICS Flashcards
(32 cards)
Nibble
4 bits
2’s complement
2^n - N. Sign bit has 2 representations of 0
Word
Number of bits a system operates with
Numerical Precision
Number of digits to represent a number. Multiple of the smallest bit
Floating Point
Represent a number in standard form and then an 8 bit number
Control Unit
Decides where information comes in
ALU
Arithmetic and Logical Unit. Does math operations
Program Counter
Stores address of next instruction
Accumulator
Stores the result of the operation
Control Bus
Connects the CPU to other devices
Address Bus
Communicates the memory locations
I/O
Input and Output of the computer
Clock Cycle
Square-wave signal to synchronise computer actions
Fetch
Read PC, load instruction, update PC
Analytical Engine
Mechanical general purpose computer
Linking
Program that links code with other called code
Parsing
Checks syntax, extract information, variables
Loader
Loads the program and data into the memory
Interpreter
Program which performs code without converting to machine code
Java Virtual Machine
Provides security and platform independence
Passing by Value/Reference
Value is always the same, but reference can be changed
Symbolic Reference
Text reference to a variable
Local Variable
A variable only in a method
Static Method
Can be ran without and instance of the class
