Study sets, textbooks, questions
Upgrade to remove ads
Terms in this set (123)
The main component of the computer which is referred to as the brain.
The program that is used to start the computer. It is automatically loaded so that its instructions can be fetched when the computer is turned on, and it eventually loads the operating system.
Measured in hertz or cycles per second. Represents how many instructions per second the processor can execute.
Each single processor circuit capable of fetching and executing instructions.
Memory buffer on the processor that stores instructions which have been fetched before and allows them to be fetched more quickly the next time.
This is the process of fetching the instructions from memory, decoding them and then executing them so that the CPU performs continuously.
A processor with more than one core (processor circuit) which means it can fetch and execute more than one instruction at a time.
Random Access memory (RAM)
Main memory of a computer that temporarily stores data, applications and the operating system whilst in use. When the power is turned off it loses its data (Volatile). Made up of many addressable locations. Also known as Immediate Access Store and Primary Memory.
The component in the computer that fetches, decodes and executes instructions.
High speed memory in the CPU that is used to store a copy of frequently used instructions and data. Faster access speed than main memory. Used to improve CPU performance.
The circuits/internal wiring that connect the processor and main memory together.
A CPU that contains multiple processor components (cores) that can operate independently to process more than one task at a time.
The internal, logical structure and organisation of the computer hardware.
Works with the CPU to control the flow of data within the system.
Arithmetic and Logic Unit (ALU)
Performs all the arithmetic and logical operations within the CPU.
Read only memory (ROM)
A store for data in a computer that cannot be overwritten. Data in ROM is always available and is not lost when the computer is turned off.
The electronic device in a computer that controls the timing of signals.
A system of numbers using only two digits 0 and 1 (also called the base-2 system).
Solid-state memory used as low cost secondary storage in portable devices and as removable memory.
Technology based on electronics with no moving parts, for example transistors and capacitors as used in memory chips
Non-volatile storage used to store programs and files that need to be kept even when the power is not on.
Describes memory that loses its contents when the power is turned off.
Describes memory that does not lose its contents when the power is turned off
External code sourses
Multiple pieces of code joined together using mash up
Webpage or coded app, they are used to combine data or functionality from 2+ sources
Example of mash up
Allows you to get a scroller on all the information from the sources.
Benefits of iframes
Keeps one part of the page static and allows the others to move, reduces bandwidth and reduces server load
Negatives of iframes
Can be confusing, if a set is missing then it can break, search engines struggle
API is short for ...
Application Programming Interface
That is a common boundary between to systems and allows each of the systems to work in tandem
Companies who use APIS
Google, Facebook, Twitter
Examples of implimentations of Apis
iOS 9 works on multiple platforms
What is a procedure/functions
Its a set of instructions to follow and rules to obey.
What is the purpose of a function
It's to return a value
What is a procedure
A sub-routine that prints out a value but doesn't return it
What is a function
A sub-routine that returns a value
Why programmers use functions
Easier to read, easier to share the code, reduces programming error
What are parameters
They are values that you pass to form a procedure.
What is the purpose of parameters
To make sub routines easier
What is volatile memory?
Volatile memory is memory that will be erased after the power supply is cut
Name three advantages of volatile memory
Functions fast, suited to protecting sensitive information, deleting it after the supply is cut, cheaper
Name three disadvantages of volatile memory
What is non-volatile memory?
Non-volatile memory is memory that keeps its information after the power supply is cut.
Name three advantages of non-volatile memory
doesn't lose its memory even after power loss,
Name three disadvantages of non-volatile memory
What is DRAM
Dynamic Random Access Memory, a small space RAM that is much more compact than normal RAM, however it needs to be connected to the motherboard to function
What is a network?
A group of computers linked together to share resources.
What are Protocols?
Rules for network communications
What is TCP and what is it used for?
Transmission control protocol reads and sends packets of data to and from the internet
internet protocol allows a computer to be recognized according to the IP.
Hypertext transfer protocol-how servers transfer information back and forth across the internet.
File transfer protocol
A network in a ring formation where the information passes through all points before returning to the original point.
A global network connecting millions of computers, making it possible to exchange information.
A device that routes packets between networks. Used to connect LANs to WANs (e.g Internet)
A device that changes analog signals into digital signals so telephone system can be used to transfer data across the internet.
A high speed connection to the Internet.
World Wide Web; a system of interlinked web pages contained on the internet.
Hypertext Transfer Protocol. A protocol for controlling how Web browsers and servers pass information back and forth over the Internet. HTTPS uses encryption.
Every network device is assigned a unique address so that it can receive packets of data.
The text label for a website on the internet.
Domain Name Systems, hold domain names and the IP addresses that correspond to them.
Hypertext Markup Language, a standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages.
Cascading Style Sheets (CSS) is a style sheet language used for describing the look and formatting of a document written in a markup language.
Local Area Network is a collection of computers and peripherals connected within a single site.
Peer-to-peer network (P2P)
A way of connecting devices together where all devices are of equal status allowing each computer to have access to any other computer on the network.
Wide Area Network. A network spread over a large geographical area such as a country.
Client server network
A type of network where a central server hosting files and software is connected to devices called clients.
The way in which the network is laid out.
Network layout wherein all computers connect to the network via a central bus cable.
Network layout in which all host machines are connected to a central hub or switch.
Network layout where each device connects to exactly two other devices creating a ring shape.
A small unit of data transmitted over a network.
Rules determining the format and transmission of data.
A license purchased by an organization to equip all the computers on a site with certain software.
A computer that is not connected to a network.
Network Interface Card (NIC)
Hardware that goes into a computer to provide a coonection to a LAN. Can be wired or wirless.
Hardware that connects computers together in a LAN.
Harware that is used to connect two networks together such as a LAN to the Internet.
A unique hardware number allocated to every NIC. 48-bit number usually written in HEX.
Wireless Access Point
Hardware device to which computers connect wirelessly. Can be a wireless router, hub or switch.
The standard way to connect computers on a network over a wired connection
The maximum amount of data that can pass from one point to another in a unit of time
Fibre Optic Cable
Cable made of optical fibers that can transmit large amounts of data at the speed of light
A combination of hardware and software components that allow input, processing and output of data
The physical components that make up a computer system
The program that runs on a computer system
Hardware devices that take real-world analogue data and turn it into digital form (e.g. mouse or keyboard)
Hardware devices that use digital data from a computer to produce information in a form we understand (e.g. screens or printers)
How much you can depend on the computer system being available when you need it
The proportion of time that a system is operational (usually a percentage)
Mean Time Between Failure: A measure of availability often quoted by manufacturers
Describes a system that is resilient to failure
Computer Systems where redundant components stop a single failure bringing the system down
Spare hardware components that are built into the system, so if one compnent fails, there is a spare
Central Processing Unit that contains the processor, main memory and cache
Main Memory/ RAM
The memory that is used to temporarily store programs whilst they are running
The component in the computer that fetches, decodes and excecutes instructions
High speed memory in the CPU that is used to store a copy of frequently used instructions and data
Measured in Hertz, it represents how many instructions per second the processor can excecute
Level 1 Cache
Cache that is on the processor chip
Level 2/3 Cache
Cache that is on the motherboard
The circuits/ internal wiring that connect the components within the CPU together
The process by which a program is run: instructions are stored in main memory, fetched by the processor one at a time, decoded and excecuted
Dual Core/ Quad-Core
A CPU that contains multiple processing components (cores) that can operate independently to process more that one task at a time
Random Access Memory: A type of memory that is read-write and volatile
Read Only Memory: memory that is hard-coded at the time of manufacture
The first program that is loaded into main memory from ROM when a computer is switched on
Describes memory that loses its contents when the power is turned off
Decribes memory that does not lose its contents when the power is turned off
Long term, non-volatile storage media such as hard disks and memory sticks
Part of the hard disk that is configured to behave as an extension to main memory
Secondary Storage such as hard disks, tape and floppy disks
Secondary Storage that is read using lasers such as CDs and DVDs
Solid State/ Flash Memory
Secondary Storage that has no moving parts. Used in memory sticks, cameras and phones
Another term for a USB memory stick
Electronically Erasable Programmable Read Only Memory
What is DRAM?
Memory that isn't stored for a long time
Sets with similar terms
CHAPTER 3 HARDWARE: CPU
CS GCSE 2018 : Computer Memory
Sets found in the same folder
Comptia A+ Chapter 8 - Installing Wireless SOHO Ne…
Fundamentals of Computers
Other sets by this creator
German speaking year 10 2nd assessment
Recommended textbook solutions
Information Technology Project Management: Providing Measurable Organizational Value
Jack T. Marchewka
Introduction to Algorithms
Charles E. Leiserson, Clifford Stein, Ronald L. Rivest, Thomas H. Cormen
Information Technology Project Management: Providing Measurable Organizational Value
Jack T. Marchewka
Service Management: Operations, Strategy, and Information Technology
James Fitzsimmons, Mona Fitzsimmons
Other Quizlet sets
EXAM 3 MIDDLE AMERICA TEXTBOOK
Econ 201, Mark Farley, Quizzes 5-16
True or False: The speed of the system bus in modern PCs is measured in MHz (i.e. millions of cycles per second)
Buffer that holds results in a dynamically scheduled processor until it is safe to store the results to memory or a register.
What method is most effective for preventing an ESD event when installing RAM?
When data, applications, and resources are stored on servers rather than on user's computers, it is referred to as: