ROM

• Read Only Memory

• “…computer memory on which data has been prerecorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read.

-Webopedia

Hard disk

• “This is large-capacity permanent storage used to hold information such as programs and documents.”

-Tyson. How PCs Work.

Sound Card

• “This is used by the computer to record and play audio by converting analog sound into digital information and back again.”

-Tyson. How PCs work.

Mouse

• “A device that controls the movement of the cursor or pointer on a display screen…”

-Tyson. How PCs work.

Scanner

• “A device that reads data and inputs it to the computer…”

-Wilson.

Ports

• Slots or spaces “on the outside of a computer to attach external devices such as printers, scanners, tape backup drives, removable CD-ROM or floppy-disk drives.”

-Wilson.

• Ethernet

• USB

• Serial

LAN

• Local Area Network– Network covering a small geographic area

GUI

Graphical User Interface

Icon-based command system

ASCII

American Standard Code for Information Interchange

Standard allows for transfer of information between different systems

Binary

• “Computers are based on the binary numbering system, which consists of just two unique numbers, 0 and 1.”

-Webopedia

• All digital data is encoded in the binary system so that it can be processed by computers. Everything is represented in strings of 0s and 1s.

Unicode

• More complex than ASCII

http://webopedia.com/TERM/U/Unicode.html

cache

• Temporary storage of data that might be accessed again.

CPU

• Central Processing Unit

• Main part of a computer

Operating System

• Software that allows the operation of the computer and other applications

• What is the latest OS from Microsoft?

PC

• Personal Computer

• Individual computer or workstation

Graphics Card

• Converts video data to display on the monitor

Network Card

• Enables connections to external networks

Server

• Large computers that serve software and data to smaller client PCs.

Desktop v. Laptop

• Desktop– Keyboard– CPU– Disk drives– Monitor

• Laptop– Single portable unit with battery

Hardware

• Physical components– Casing– Motherboard– Cards– Chips– Drives– Mouse– Printer

Software

• OS

• Applications• Web Browser• Word Processing• Email etc.• ILS – Integrated Library System

Hard Disk

• Long-term storage of applications (software) and files (data)

DVD

Digital Video Disc

Stores images, video and text

Server Backups

• Daily or regular backups to magnetic tape

Network Drives

• Shared drives accessed from numerous PCs on a single network

• G, H, I, J, K, S, W, Z

Monitor Technology

• CRT– Cathode Ray Tube

• LCD– Liquid Crystal Display

Screen Resolution

• The number of pixels on a monitor– 1024 X 768 means 1,024 pixels on 768 lines

Pixels

• Picture Element

• Dots or points

Peripherals

• Digital camera

• PDA – personal digital assistant

• FAX – facsimile

• Barcode scanner

WAN

• Wide Area Network– Network covering a wide area network

Wireless

• Technology provides flexibility and mobility to staff

Client-Server

• Large servers serve up applications and files to smaller PC clients

Internet

• Largest network in the world – global network of networks

• Uses standard protocols for information exchange– HTTP – Hypertext Transfer Protocol– FTP – File Transfer Protocol– SMTP – Simple Mail Transfer Protocol– TCP/IP – Transmission Control

Protocol/Internet Protocol

Internet in Libraries

• How has the Internet affected libraries?