Pharos University in Alexandria
Faculty of Engineering
Computer Skills & Programming Concepts I
Sheet (1)
Pharos University in Alexandria
Faculty of Engineering
Computer Engineering Department
Course Code: UEC01
Lecturer: Dr. Ghada Drahem
T.As : Eng. Essam Elgharib
Sheet 1: Introduction to the world of computers
Answer the following questions:
1. Write the scientific term for each sentence:
a. A programmable, electronic device that accepts data, performs operations on that data,
and stores the data or results as needed (computers)
b. Performing operations on the data (Processing)
c. Saving data, programs, or output for future use (storage)
d. Data that has been processed into a meaningful form (Information)
e. Operating system allows a computer to operate (System software)
f. Performs specific tasks or applications (Application software)
g. A very small device with some type of built-in computing or Internet capability (Mobile
device)
h. Manage resources on a network (Network servers)
i. The largest and most well-known computer network in the world (Internet)
j. Numbering system uses only two symbols (1 and 0) to represent all possible numbers.
(Binary numbering system)
k. The smallest unit of data that a binary computer can recognize (a single 1 or 0) (Bit)
l. The process of representing data in digital form so it can be used by a computer. (Digital
data representation)
m. One of the most common methods for storing graphics data. (a bitmap)
n. The digital representation of the sound at a particular moment. (sample)
o. The color of each pixel is represented by a single bit. (monochrome image)
2. Put true or false and correct the false ones:
a. Processing: Saving data, programs, or output for future use. (Storage)
b. External hardware: Located inside the main box (system unit) of the computer. (Internal
hardware)
c. Communications devices: Allow users to communicate with others and to electronically
access information.
d. System software: Operating system allows a computer to operate.
e. Information is raw, unorganized facts.(Data)
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Pharos University in Alexandria
Faculty of Engineering
Computer Skills & Programming Concepts I
Sheet (1)
f. Mainframe computer: Powerful computer used by several large organizations to manage
large amounts of centralized data.
g. External hardware components typically plug into connectors called adapters located on
the exterior of the system unit. (ports)
h. A computer does not always do whatever the instructions, or program, tell it to do.
(always)
i. To begin to use a computer, the user first turns on the power by pressing the power button,
and then the computer displays a prompt for the user to decide the next course of
action.(need O.S)
j. In Internet: Web pages contain Web sites stored on Web servers.(false)
k. ASCII is stand for American Standard Code for Information Interchange.
l. One Byte = 4 bits.(8)
m. 1 KB = 1024 Bytes.
3. Classify the following devises into “Input devises”, “Output Devises”, “Storage Devises”,
or “Communications devices”.
Hard disk, speaker, scanner, microphone, flash memory, printer, mouse, monitor, DVD,
keyboard, and modems, network adapters.
4. What are the basic computer categories?
Categories of computers
a. Mobile devices
b. Personal computers
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Pharos University in Alexandria
Faculty of Engineering
Computer Skills & Programming Concepts I
Sheet (1)
c. Midrange servers
d. Mainframe computers
e. Supercomputers
5. Choose the correct answer
1)
____ occurs when data is entered into the computer.
a.
b.
Output
Processing
c.
d.
Input
Storage
2) In addition to the four primary computer operations, today’s computers typically also perform ____
functions.
a.
calculations
c.
sorting
b.
communications
d.
programming
3) When data is processed into a meaningful form, it becomes ____.
a.
information
c.
a program
b.
code
d.
a database
4) The most common input devices today are the keyboard and ____.
a.
printer
c.
speaker
b.
mouse
d.
monitor
5) Two of the most common types of communications hardware are ____ and network adapters.
a.
ports
c.
monitors
b.
slide rules
d.
modems
6) The term ____ refers to the programs or instructions used to tell the computer hardware what to do.
a.
hardware
c.
software
b.
port
d.
adapter
7) A(n) ____ is a medium-sized computer used to host programs and data for a small network.
a.
mainframe computer c.
midrange server
b.
super server
d.
Internet server
8) A ____ is a collection of hardware and other devices that are connected together so that users can share
hardware, software, and data, as well as electronically communicate with each other.
a.
computer bank
c.
data bank
b.
database
d.
computer network
6. Convert from binary to decimal:
11, 110, 1101, and 1010.
11 = 1 * 21 + 1 * 20 = 2 + 1 = 3
101 = 1 * 22 + 1 * 21 + 0 * 20 = 4 + 2 + 0 = 6
1011 = 1 * 23 + 1 * 22 + 0 * 21 + 1 * 20 = 8 + 4 + 0 + 1 = 13
1010 = 1 * 23 + 0 * 22 + 1 * 21 + 0 * 20 = 8 + 0 + 2 + 0 = 10
7. Convert the following decimal numbers into binary
(5), (62), (51), (103), and (111)
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