Computers In Radiography Flashcards
WHAT ARE THE 3 COMPONENTS OF A COMPUTER?
Input / output devices
Processing
Storage
WHAT IS A BIANRY CODE?
A language using 0s and 1s
Processing is performed by transistor switches
0=off 1= on
WJAT ARE THE 2 FUNCTIONS OF THE BOX?
Hold all components in a cool environment
Shield outside from RF being emitted
WHAT IS THE MOTHER BOARD?
Largest circuitry board
Contains CPU memory Ports Bus Basic input output system
WHAT IS A CPU?
Central Processing Unit
Small chip which is the brain if the computer
Has a series of transistors
WHAT ARE THE 3 COMPONENTS OF THE CPU?
Arithmetic unit
Performed calculations to make decisions
Control unit
Coordinates processing steps
Registers
Small storage areas
WHAT ARE BIOS?
Basic Input / Output System
Contains instructions for the computer
Oversees basic functions such as interpreting keyboard signals
WHAT IS THE BUS
A series of connections for information to flow within the computer
WHAT DOES RAM AND ROM STAND FOR?
Random Accessed Memory
Read Only Memory
WHAT IS A PARALLEL PORT
25 pin connector
Sends 8 Bits at a time
Eg printer port
WHAT IS A SERIEL PORT?
9 pin connector sometimes 25
Sends 1 bit at once
Eg a mouse
WHAT IS AN IDE?
Integrated Drive Electronics
Found in the mother board
Connects hard drive, floppy drive and CD ROM to the board
Ribbon cables
WHAT IS A SCSI?
Small Computer System Interface
Fastest form of communication with peripherals
Eg scanners, printers and CD ROM
WHAT IS A CMOS?
Complementary Metal Oxide Semiconductor
Small memory chip powered by small lithium battery
Contains system clock
WHAT IS LAN AND WAN?
Local Area Network
Small area connected by cables
Less expensive
Eg PACS
Wide Area Network
Large Geographical area
Not connected by cables
