Study Guide for Midterm for Introduction to Computer Appliccations

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Hardware / Software

RAM vs Hard Disk vs CD ROM (vs ROM)

RAM goes away when you turn off the system

Be able to choose a system for to satisfy your needs (space, memory,� growth needs, system response time needs)

Be able to understand a computer specification (memory, hard disk, processor, ports, operating system, application systems)

Sizes - Kilo, Mega, Giga, Tera

Know whether something is hardware or software or input or output

Know whether software is application or operating system

Know what a DVD drive and CD drive are

What is defragmentation, and why do you need to do it?

How to protect against viruses

LCD monitor vs CRT

Meaning of viewable image area and resolution of a monitor

How to remove pop-ups at the source (adware remover)

How to protect against virus and spyware (anti-virus with updates; spybot; backups)

Different types of malware (virus, worm, Trojan, bot, spyware, adware)

Which is faster 56 K bps or 9 M bps?

Printer Qualities: Resolution � dpi; Print Speed (and memory); Cost to Purchase; Cost to Run (cost per page; monthly pages & maintenance)

Printer technologies:

� Ink Jet - squirts ink from little ink cartridges at the page; can be slower than laser; can be expensive per page; inexpensive for color; not great for over 100 pages a day

� Laser - like a photocopier using big toner cartridge; color much more expensive; tends to print quickly; often less expensive per page; heavy duty cycle

� Solid Ink Printer - uses melted wax for thermal transfer to paper; priced between ink jet and color laser; heavy duty cycle, but not as heavy as laser; good price per color page, but not fantastic price per black page; prints on more types of paper than laser or ink jet

� Dot Matrix - hits a ribbon like a...
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