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HASOPL Lesson 1
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HASOPL Lesson 2
HASOPL Lesson 1
32 cards
Cards (73)
Hardware
are the physical, tangible parts of a computer
Software
are the programs and data
Programs
are a series of instructions
Central Processing Unit
a chip that executes program commands
Main Memory
primary storage area for programs
Secondary Memory
provides long-term storage
Input
and
Output
Devices allows user interaction
Operating System
controls all machine activities
Operating System
manages resources such as the CPU and memory
Operating System
provides the user interface to the computer
Application Program
generic term for any kind of software
Analog
continuous, in direct proportion to the data represented
Digital
the information is broken down into pieces, and each piece is represented seperately
Magnetic Tape
is a sequential access device since its data is arranged in a linear order
Central Processing
Unit is also called a microprocessor
Central Processing
Unit
follows the fetch-decode-execute cycle
Fetch
retrieve an instruction from main memory
Decode
determines what the instruction is
Execute
carries out the instruction
Arithmetic
/
Logic Unit
performs calculations and decisions
Control Unit
coordinates the processing steps
Registers
are referred to as small storage areas
System Clock
controls the speed of the CPU
System Clock
generates an electronic pulse at regular intervals
Monitor
has a certain maximum resolution, indicating the number of picture elements (pixels)
Modem
allows information to be moved across a telephone line
File server
is a network computer dedicated to storing programs and data that are shared among network users
Point-to-point
connections are when each computer in networks can be directly connected to each other
Local-Area Networks
covers a small distance and a small number of computers
Local-Area Networks
often connects the machines in a single room or building
Wide-Area Networks
connects two or more LANs, often over long distances
Internetworking
is defined as communication among networks
Protocol
is a set of rules that determine how things communicate with each other
Internet Protocol
determines the format of the information as it is transferred
Transmission Control Protocol
dictates how messages are reassembled and handles lost information
Domain Name System
is a software that translates the internet address into an IP address
World-Wide Web
allows many different types of information to be accessed using a common interface
Browser
is a program which accesses and presents information
Uniform Resource Locator
indicates a protocol (http), a domain, and possibly specific domains
The software which manages internet communication follows a protocol called
TCP/IP
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