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.