Visual display unit that displays text and graphics on a computer
Visual display Unit benefits?
improved productivity
multitasking=
limitations of Visual Display Unit?
limited viewing angles=
Memory
Electrical components used by computers to store data and instructions that can be accessed quickly by processor
Memory
RAM
Cache
Optical disks
Magnetic disks
Ports
Virtual point where network connections start and end
Ports
Ethernet
USB
HDMI
Firewire
Storage
Component of your computer that allows you to gain access and store data long term
Storage
HDD
SSD (all volatile)
DVDs
Flash drives (all non-volatile)
CPU
Interprets, processes and executes instructions
arithmetic logic unit-Performs arithmetic and logical operations
Control Unit - Directs the operations of the processor
Registers - Used to help store instructions and provide them to processors
Cache memory - Used to temporarily store data and instructions that the processor is likely to reuse
Clock - Used to coordinate all the computers components, higher the frequency the more instructions can be performed
Buses - High speed internal connection which is used to send control signals to and data between the processor and other components
What is the role of the motherboard?
Motherboard connects all internal components like memory processor and graphic cards and other hardware components.
ethernet?
used for cable based networks
USB?
enables the computer to connect to devices such as printers, cameras and mobile devices
Firewire port?
Similar to USB but only links devices which need high speed transfer of large amounts of data to computers using special cables
Bluetooth
Short range wireless interconnection of electronic devices
WIFI
Wireless networking technology that uses radio waves to provide wireless high speed internet connection
optical fibre is plastic fibre which can transmit light from one end to another
Embedded system
combination of computer hardware and software designed for a specific function
examples of embedded software?
washing machines, cars
Internet of Things
describes a global network of connected objects which have RFID( radio frequency identification) chips embedded within them.
Desktop
allows the user to carry out a range of activities including data manipulation, game playing design and communication facilities for business or personal use.
Mainframe
designed to solve engineering problems that require complex calculations. They are very reliable and secure as they have rigorous backup capabilities and component redundancy, meaning if one component fails the other takes its place without stopping the processing.