Lesson 1-2 What is Computer Hardware
Terabyte (TB)
1 trillion bytes
Circuit Board
A thin rigid board containing an electric circuit; a printed circuit
Peripheral
Hardware that is separate but can be connected to the case.
Hardware
The computer's physical parts.
Port
Connection between a computer and a device.
Volatile Memory
Data in RAM is lost when computer is turned off.
Central Processing Unit (CPU)
Device that processes data.
Small Computer System Interface (SCSI)
connect several peripherals to a computer at one time.
Wireless Connection
connects computers without the use of cables or wires, such as radio waves.
High-Definition Multimedia Interface (HDMI)
digital cable standard for audio and video transmission.
Connector
joins a cable to a port
Ethernet
most common networking tech used for LANs.
Parallel Ports
move data into groups.
Serial Ports
move data one bit at a time.
Random Access Memory (RAM)
stores data and instructions while the computer is working.
Physical Connection
such as a cable. connection created using physical media.
Upload
transfer (data) from one computer to another, typically to one that is larger or remote from the user or functioning as a server.
Bluetooth
used for communicating between devices that are less than 30 feet apart.
Wi-Fi (Wireless Fidelity)
used for connecting to internet
Digital Visual( or video) Interface (DVI)
used to connect a monitor or other display device to a computer.
Video Graphics Array (VGA)
used to connect any type of display device to a computer, including monitors, projectors, and televisions.
IR Wireless.
uses infrared radiation to transmit data
Universal Serial Bus (USB)
Common interface that enables communication between devices and a host controller such as a personal computer (PC). It connects peripheral devices.
Cloud Storage
Online offered on various websites.
Optical Storage Devices
Optical storage is the storage of data on an optically readable medium. An optical disc drive is a device in a computer that can read Optical Disks.
Circuit
Paths along which an electrical current is carried
Memory Cards
Store data for mobile devices like smartphones and digital cameras.
Device
The processor is a hardware device that turns the raw data into usable information.
