Cs100 prelims (pt 3) Flashcards
is a case thatcontains electronic componentsof the computer used to process data
system unit
is the main circuit board of the system unit
motherboard
contains integrated circuits
computer chip
,interprets and carries out the basic instructions that operate acomputer
processor,
What is the processor also called?
also called the central processing unit (CPU)
is the component of the processor thatdirects and coordinates most of the operations in thecomputer
control unit
performs arithmetic,comparison, and other operation
arithmetic logic unit (ALU)
(ALU)
arithmetic logic unit
processor contains ___________, thattemporarily hold data and instructions
registers
controls the timing ofall computer operations
system clock
The pace of the ____________ is called the __________, and is measured in _____________
system clock, clockspeed, gigahertz (GHz)
(GHz)
gigahertz
are continuous and vary instrength and quality
Analog signals
are in one of two states: on or off
Digital signals
uses two unique digits
The binary system
is themost widely used coding scheme torepresent data
ASCII (American Standard Code forInformation Interchange)
ASCII )
(American Standard Code forInformation Interchange
consists of electronic components that storeinstructions waiting to be executed by the processor, dataneeded by those instructions, and the results of processing thedata
Memory
Memory size is measured in:
kilobytes (KB or K),
megabytes(MB),
gigabytes (GB),
terabytes (TB)
Loses its contents whenpower is turned of
Volatile memory
Does not lose contentswhen power is removed
Nonvolatile memory
usually reside on a memory module and are insertedinto memory slots
RAM chips
Three basic types of RAM chips exist:
Dynamic RAM
Static RAM (SRAM)
Magnetoresistive RAM (MRAM)
speeds the processes of the computer because it storesfrequently used instructions and data
Memory cache
refers to memorychips storing permanent data and instructions
Read-only memory (ROM)
(ROM)
Read-only memory
chip is a blank ROM chip that can be written topermanently
A PROM (programmable read-only memory)
A PROM
(programmable read-only memory)
can be erased electronically and rewritten
Flash memory
provides high speeds and consumes littlepower
CMOS technology
is the amount of time it takes the processor to readfrom memory
Access time
is a socket onthe motherboard that can hold anadapter card
expansion slot
converts the walloutlet AC power into DC power
power supply
enhancesfunctions of a component of thesystem unit and/or providesconnections to peripherals
An adapter card
joins a cable to a port
connector
, the computer automatically can configureadapter cards and other peripherals as you install them
Plug and Play
is the point at which a peripheralattaches to or communicates with asystem unit
port
can connect up to 127 different peripherals togetherwith a single connector
USB port
You can attach multiple peripherals using a single USB port with a ______
USBhub
allows the various devicesboth inside and attached to thesystem unit to communicate witheach other
bus
is the number of bitsthe processor can interpret andexecute at a given time
Word size
is an opening inside thesystem unit in which you caninstall additional equipment
bay
typically holds diskdrives
A drive bay
typically holds diskdrives
A drive bay
which is an external powersupply
AC adapter,
is any data and instructions entered into the memory of acomputer
Input
, also known as the cursor, is a symbol on thescreen that indicates where the next character you type willappea
insertion point
incorporates comfort, efficiency, and safety into thedesign of the workplace
Ergonomics