Chapter 2 Be Familiar with the Terms That We Have Studied

Chapter 2 – be familiar with the terms that we have studied

Don’t forget to utilize the website that corresponds to the textbook. You may want to use it to study the keywords or take the practice quiz under Online Study Guide.

Go to www.prenhall.com/techinaction and choose the Companion Website for the book on the left. Choose chapter 2 on the shortcut numbers across the top.

As we learned in Chapter 1, the four main functions of a computer are to accept INPUT, provide OUTPUT, perform PROCESSING, and STORE data. So in chapter 2 we examine the hardware that makes those functions possible.

1.  Peripheral devices

2.  Input devices

a.  Keyboards:

i.  QWERTY (Why was it created?)

ii.  Dvorak (Why was it created?)

iii.  numeric keypad

iv.  function keys

v.  Windows key

vi.  keyboards for notebooks

1.  touchpad

2.  trackpoint

vii.  keyboards for PDAs

viii.  wireless keyboards

1.  infrared

2.  Radio Frequency

b.  Pointing devices:

i.  Mice:

1.  Rollerball

2.  Trackball

3.  Optical

4.  Wireless

ii. PDA stylus

iii.  Trackpoint

iv.  Touchpad

v.  joystick

vi.  touchscreen

c.  Sound:

i.  Microphone (Which is best to have?)

ii.  Videoconferencing

iii.  speech-recognition

d.  Input devices for physically challenged

3.  Output devices

a.  Hardcopy and softcopy

b.  Monitors:

i.  CRT

ii.  LCD

iii.  know advantages & disadvantages of each

iv.  pixel

v.  refresh rate

vi.  resolution

vii.  size of each (19”; etc)

c.  Printers:

i.  Impact (dot-matrix)

ii.  non-impact (laser & inkjet)

iii.  specialty printers (multifunction printer, plotter, thermal printers)

iv.  Selecting a printer

1.  speed (ppm)

2.  resolution (dpi)

3.  Memory

4.  Cost of consumables (Number of cartridges)

d.  Data Projectors

e.  Sound

i.  Speakers; earphones or ear buds

ii.  surround sound

iii.  subwoofers

4.  System Unit

a.  Desktop

b.  Best way to turn off your computer

i.  Warm boot

ii. Cold boot

c.  Volatile and Nonvolatile storage

d.  Motherboard

i.  CPU

ii. Memory modules (RAM)

iii.  ROM

iv.  Expansion slots and expansion cards (Video, sound, NIC)

e.  Drive bays

i.  Internal – Hard drive

ii. External – CD, DVD, floppy, & flash drives; flash memory card slots

f.  ports

i.  serial,

ii. parallel

iii.  USB

iv.  Firewire

v. Connectivity ports

1.  Modem

2.  Ethernet

5.  Ergonomics

a.  What is it?

b.  Positioning the monitor

c.  Repetitive strain injury

i.  Ergonomic keyboard

ii. Wrist rest