Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
any machinery (most of which uses digital circuits) that assists
in the input, processing, storage, and output activities of an information system. |
Hardware
|
|
the part of the computer that consists of three associated elements: the arithmetic/logic unit the control unit, and the register areas.
|
CPU: central processing unit
|
|
the part of the CPU that performs mathematical calculations and makes logical comparisons
|
ALU -Arithmetic/logic unit
|
|
The part of the CPU that sequentially accesses program instructions, decodes them, and coordinates the flow of data in and out of the ALU, registers, primary storage, and even secondary storage and various output devices.
|
Control Unit
|
|
a high-speed storage area in the CPU used to temporarily hold small units of program instructions and data immediately before, during, and after execution by the CPU.
|
Register
|
|
The part of the computer that holds program instructions and data.
|
Main Memory:
|
|
Central processing unit (CPU)
Input devices Output devices Communications devices Primary storage devices Secondary storage devices |
Hardware Components
|
|
• Step 1: Fetch instruction
• Step 2: Decode instruction • Step 3: Execute instruction • Step 4: Store results |
Hardware Components in Action
|
|
series of electronic pulses produced at a predetermined rate that affects machine cycle time
|
Clock speed:
|
|
billions of cycles per second
|
Gigahertz
|
|
millions of cycles per second
|
Megahertz
|
|
transistor density of chips will double every 18 months
|
Moore's Law
|
|
bits that together represent a single character of data
|
byte
|
|
– Temporary and volatile
|
Random access memory (RAM
|
|
EDO (Extended Data Out)
DRAM (Dynamic RAM) SDRAM (Synchronous DRAM) |
• Types of RAM
|