TEST 2 review guide
50 questions
10 T/F
40 multiple choices
One hour
Modern business computer
Chapter III
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Abacus.
Computer and digital electronic device.
Keyboard keys represents more and ASCII characters
Coleman keyboard, chorded keyboard
Touch detection technology input technology
Wii remote controller
The Wand scanner.
Computed tomography and high precision tomograms
Computer clock.
Multicore processing technology
Pros and cons of LCD and LED
Resolution
System clock and computer processor as compared to human
organs.
Knowledgeable employees and input technologies
GIGO
QUERTY AZERTY COLEMAK DVORAK keyboards
Chorded Optical and virtual keyboards
Touchpad Touch screen motion detection and graphics tablet
input
Convergence
Sonogram output and ultra-sound input
Internal input and video input
Motherboard
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The processor in the computer fulfills the role of the brain
Word size
Pipelining and Co-processing
RAM ROM CMOS
Parallel processing multicore processing
VRAM located on the hard disk drive
CRT LCD LED and gas plasma (Extended use of Gas plasma
screen produces deteriorated pixels that lower its quality)
Clock and processor speed
Co-processor examples (NVIDIA graphics processor and
floating point math processor)
Modern processors use 100 million to few billions of
transistors
Network and Internet Input include forms designed to collect
needed data for processing
Laser printer
Dot matrix printers
Ink jet printer technology is based on propelling ink particles
onto the paper and may use a software to direct ink bubbles.
Modern business computer
Chapter IV
1- Smartware is another word that may be used for software
2- Operating system (OS) must accommodate the same
word size as the processor of the computer.
3- Linux kernel is used in modern operating systems for
mobile computing and internet application designs.
4- MAC/OSX operating system is designed to power MAC
computers only.
5- Android OS is based on its own kernel created by
Android and presently developed by Google who
purchased Android in 2005
6- System software teaches the computer how to perform
while application software presents tools used by the user
to tell the computer what he needs.
7- Windows phones 8 (Apollo) operating system released on
10/29/2012 will power the new NOKIA smartphones.
8- Windows 8 operating system is backward compatible
9- Each type of peripheral devices has its own driver even if
the devices have the same brand.
10Kernel and OS
11Linux kernel GNU
12Restore utility program
13Smart phone operating systems: Symbian Microsoft
phones 7, Microsoft phones 8 Android and iOS
14Microsoft Windows 8 pros and cons
15Importance and tasks of Operating System
16Multi-tasking Multi-processing Multi-threading
17Instruction exchange between processor and
memory takes place over the front side bus
18Mac finder and Windows explorer are examples of
file manager utility programs
19When called by the operating system, most utility
programs are needed to stay in RAM briefly as they are
needed
20API (Application Programming Interface) Is driver
for virtual printer or keyboard
21MS Word 2013 allows you to edit a picture
whenever you insert it and to easily merge many shapes
into one.
22What if scenarios and automatic recalculation in
EXCEL
23Vertical and horizontal market software
24Examples of each market software
25Interpreter Compiler
Modern business computer
Chapter V
1- The word electricity was coined by William Gilbert referring to
“ELECTROCUS” (the Greek word for AMBER).
2- Amber property of glowing when rubbed makes it the first
known origin of electricity 1000 BC.
3- In 1907 Lee De Forest developed the 1st transistor (three
electrodes) by adding one electrode to the diode and that was
the date electronics technology was born
4- Advantages of silicon transistors
5- In 1843 the Congress agreed to fund $30,000 to construct a 40
miles telegraph line linking Washington D.C and New York
6- Morse code
7- Telegraph was the only technology (1836-1876).
8- Upgrading to automatic switching impact on operators
worldwide
9- Pros and cons of telephone compared to radio
10- Wires color in twisted pair cables
11- Pros and cons of fiber optic cables
12- Digital signals have no frequency
13- Directional antennas technology: Dish antenna, dipole antenna
and Yagi antenna requires the antenna to be directed following a
given angle.
14- The American GPS system in use now is the GPS II and
consists of a constellation of 24 satellites
15- GPS computing accuracy is highly affected by the strength of
the satellite signals
16- GPS system uses ground stations designed to receive satellites
signals, amplify them, correct possible errors and retransmit
them to users
17- Chinese GPS BeiDou will have a complete constellation of 35
satellites and will cover the globe by 2020.
18- Simplex HDX or FDX (examples of each technology)
19- Time or frequency multiplexing allows full duplex radio to use
only one frequency and double the communication power
without any need for adding new towers and equipment
20- What is decibel?
21- Towers and satellites
22- Line of sight
23- Electromagnetic waves were also known as Hertz waves
24- Conversion wave length/ frequency and vice versa.
25- T3 line and the T1 line
26- Thomas Edison invented the carbon microphone in 1877.
27- Electrical telephony was born in 1876