CT1 Flashcards
What is an input device?
Hardware that sends data into a computer system from the outside world.
What is an output device?
Hardware that receives data from a computer system and presents it in some form for the user
What is a storage device?
Hardware that saves data so that it can be recalled and used again
What is a hard drive?
A magnetic storage device for digital data. Long term storage- files, applications
What is the motherboard?
It houses the other components.
What is the RAM?
Random Access Memory
Short-term memory
currently running -applications
What is the CPU?
Central Processing unit.
Process information
What does BIOS stand for?
Basic Input Output System
.
What does the Arithmetic Logic Unit do?
Performs arithmetic calculations and makes logical decisions.
What does the Control Unit do?
Sends signals to control how data moves around the CPU
What does the Cache do?
Provides fast access to FREQUENTLY used instructions and data
CPU’s personal storage
Temporary storage
What does the Register’s do?
Tiny, super-fast pieces of onboard memory inside the CPU, each with a specific purpose.
What is Clock Speed?
Measured in the number cycles per second - or hertz (Hz)
3.2GHz clock speed = 3.2 billion instructions fetched per second.
What is Cache size?
Much quicker to read from than main memory (RAM)
Stored copies of recent data and instructions
Reduces the need to go and get instructions and data from memory, saving time.
What is number of cores?
A core is, in very simple terms, a complete copy of a CPU
CPUs with multiple cores have more power to run multiple programs at the same time.
What does the ROM do?
- Read Only Memory
- Long term memory
- Non-volatile
- Boot strap loader
- Cannot add more rom: have to buy a new computer.
What are some examples of input devices?
Keyboard
Mouse
Touchpad
Scanner
Digital Camera
Microphone
Joystick
Graphic Tablet
Touch Screen
Webcam
What are some examples of output devices?
Monitor
Printer
Speaker
Plotter
Projector
Headphone
GPS
Sound Card
Video Card
Speech Synthesizer
Each proccessing unit has its own:
- Registers
- ALU
- Accumulator
- Control unit
What does BIOS do?
Contains all the code requires to control the hardware.
TRUE OR FALSE?
If the computer crashes, the BIOS data is protected
TRUE
