October 23, 2012

PTI assignment chapter 4 and 5

rickvian aldi

1. True
2. False
3. True
4. True
5. False
6. True
7. True
9. False
10. False
11. False
12. False

Multiple Choice

1. B. central processing unit
2. A. control unit
3. B. registers
4. B.  massively parallel processing
5. C.  firmware
6. B. port replicator
7. A.  docking station
8. D. front side bus


3. f.
4. b.
5. d.
6. e.
7. g.
8. c.
9. i.
10. j.

Short Answer
1.-->2 types design of Tablet PC’s are slate Tablet PC and convertible Tablet PC.

-->The difference between those 2 design is the location of the system unit, whether it’s below the display or below the keyboard unit.

2. -->Motherboard  is the main circuit board of the system unit.

-->Computer chip is a small piece of semiconducting material on which the integrated circuit are etched.

3. -->The four basic operations of a machine cycle is fetching, decoding, executing, storing.

-->Register functions include storing thelocation from where an instruction was fetched,storing an instruction while the control unitdecodes it, storing data while the ALU computesit, and storing the results of a calculation.

4. --> omputers,peripherals, smart phones, PDAs, cars, andother consumer electronics are Bluetoothenabled.

-->A computer can become Bluetooth enabled by purchasing a Bluetooth wireless portadapter, Bluetooth PC Cards and ExpressCardmodules for traditional notebook computers andTablet PCs, and Bluetooth cards for smart phonesand PDAs.
5. --> ompressed air can be used to removes dust andlint from difficult-to-reach areas and removessticky liquid spilled on keyboards.

-->Before cleaning a computer, turn it off and unplug it from any electrical source.
Disconnect all cables from the port. Use compressed air to blow away dust on the computer opening. Then wipe the case of the computer using antistatic wipe, use cleaning solution and a soft cloth to clean the computer screen.
Prepare also antistatic wristband, vacuum cleaner, and antistatic wipe to clean the inside of the computer.
If you are not comfortable cleaning the inside of your computer, call professional to do it for you.

1. True

multiple choices
1.c. Ergonomic Keyboard
2.a. predictive text input
3.b. multi-touch
4.c. graphics tablet
5.d. Voice recognition
6.c. Music production software
7.c. radio signals
8.c. gesture recognition

1. B

1. trackball, touchpad, pointing stick.

-a stationary pointing device
with a ball on its top or side

-a small, flat, rectangular
pointing device that is sensitive to pressure
and motion (Figure 5-10). To move the pointer
using a touchpad, slide your fingertip across the
surface of the pad.

-A pointing stick is a pressure-sensitive
pointing device shaped like a pencil eraser
that is positioned between keys on a keyboard

Move the mouse until the pointer on the desktop is positioned on the
item of choice.

Press and release the primary mouse button, which usually is the left
mouse button.

Press and release the secondary mouse button, which usually is the right
mouse button.

Quickly press and release the left mouse button twice without moving
the mouse.

Quickly press and release the left mouse button three times without
moving the mouse.

character recognition (OCR) is a technology
that involves reading typewritten, computerprinted,
or hand-printed characters from ordinary
documents and translating the images into
a form that the computer can process.

-Optical mark
recognition (OMR) is a technology that reads
hand-drawn marks such as small circles or
rectangles (Figure 5-31). A person places these
marks on a form, such as a test, survey, or questionnaire
answer sheet.

4.A fingerprint reader,
or scanner, captures curves and indentations of
a fingerprint. The reader can be
set up to perform different functions for different
for example, one finger starts
a program and another finger shuts down the

5.-Federal law that
requires any company with 15
or more employees to make
reasonable attempts to accommodate
the needs of physically
challenged workers.

With gesture recognition, the computer
will detect human motions. Computers with
gesture recognition capability have the potential
to recognize sign language, read lips, track facial
movements, or follow eye gazes. For paralyzed
or speech impaired individuals, a doctor will
implant a computerized device into the brain.
This device will contain a transmitter. As the user
thinks thoughts, the transmitter will send signals
to the computer.