LO1—Understand Computer Hardware Components Flashcards
Computer hardware
Physical components of a computer
Computer components
Internal or built in elements that allow the computer to run (processors, storage, power supply)
Icon
A symbol/image on a computer screen
Input device
A device (which may be another computer) which allows the user to give instructions or provide data to the computer system
Output Device
A device that enables the computer system to provide information, data or instructions to another user (which may be human or another user)
Storage device
Any hardware capable of storing information temporarily or permanently
Change management
A systematic approach to dealing with the transition or transformation of an organisation’s goals, processes or technologies. The purpose of change management is to implement strategies for effecting change, controlling change and helping people to adapt to change
Hybrid cloud
A cloud computing environment which uses a mix of on-premises, private cloud and public cloud services with orchestration between the two platforms. By allowing workloads to move between private and public clouds as computing needs and costs change, hybrid cloud gives businesses greater flexibility and more data deployment options
Hypervisor
A hardware virtualisation technique that allows multiple guest operating systems (OS) to run on a single host system at the same time. The guest OS shares the hardware of the host computer, such that each OS appears to have its own processor, memory and other hardware resources. A hypervisor is also known as a Virtual Machine Manager (VMM).
Internet of Things (IoT)
A computing concept that describes a future where everyday physical objects will be connected to the Internet and be able to identify themselves to other devices
Privacy Filter
A panel or filter that is placed over a display to make it difficult or impossible for someone to see the screen without being directly in front of the display
Radio Frequency Identification (RFID)
A system used to track objects, people, or animals using tags that respond to radio waves. RFID tags are integrated circuits that include a small antenna. They are typically small enough that they are not easily noticeable and therefore can be placed on many types of objects
Social Engineering
A non-technical method of intrusion used by hackers that relies heavily on human interaction and often involves tricking people into breaking normal security procedures
VoIP
A technology that allows telephone calls to be made over computer networks like the Internet
Central processing Unit (CPU)
The unit that controls the actions of the computer system and manipulates the data required for particular tasks
Connectivity
The ability to connect with another computer or information system
Communication device
A communication device is piece of equipment or hardware designed to move information or data from one place to another, in other words, allowing one computer device to communicate with another
Network hub
A hub is the most basic networking device that connects multiple computers or other network devices together. a network hub has no routing tables or intelligence on where to send information and broadcasts all network data across each connection
Switch
A computer networking device that connects devices together on a computer network, by using packet switching to receive, process and forward data to the destination device
Router
Routers perform the traffic directing functions on the Internet. A data packet is typically forwarded from one router to another router through the networks that constitute the internetwork until it reaches its destination node
Hybrid Network Hub
A network that contains two or more communications standards in one network design. An example of this is a network that combines wired and wireless technologies
Kilobyte
10 to the 3
Megabyte
10 to the 6
Gigabyte
10 to the 9
Terabyte
10 to the 12
Petabyte
10 to the 15
Exabyte
10 to the 18
Zettabyte
10 to the 21
Yottabyte
10 to the 24
