BA/BCA Name
________________
I. Main Components of a
Computer System
A. A Computer System is closely based on the
Basic Systems Model with __________ from the Information Processing Cycle.
1. _________- Enter data instructions and/or
software.
2. ________________Memory - Computer
must have memory to process information.
3. ___________- You need a way to output
processed information in a form that is ____________ and meaningful.
4. ________________Storage - You need a
place to ________ information so you can retrieve it later.
B. Hardware, _____________ & the Computer
System
1. _____________- All electronic and mechanical
devices that are _____________ part of the computer system.
a. ___________
hardware
b. _____________ hardware
c. designed to __________ a specific need
2. _______- Central Processing Unit - most
important piece of hardware.
3. Peripherals - all ________ hardware
devices.
4. 4 Main _______________of a Computer System
a. _________
b. __________
c. ___________-
d. ___________ ______________
II. Input & Input
Devices
A. __________ ___________
1. Used to ________ data, ___________ or
programs into a computer.
2. ______________ information into a form that
can be read and interpreted by the computer.
3. Allows you to "________" with the
computer.
B. Types of Input Devices
1. _______________
a. Most _____________ used input device.
b. Closely resembles a typewriter -
___________.
c. Special Keys
1) Function Keys
a) Causes computer to do something ___________than
key-enter a letter, #
or symbol.
b) It may _________ a command but depends on
your software.
c) ______, _______, ________
2) Cursor ___________Keys
a) Keys with arrows that indicate the _____________
your ________ moves
around the
screen.
b) pg up, pg down, _________, _______
3) Enhanced Keyboard - includes a
numeric keypad.
2. _________________
a. Named after a little gray _____________.
b. Traditionally has a ______ and a ________.
c. _____ mice can be cordless and ball-less
(laser).
d. Commonly used to ______________ the keyboard.
3. __________________
a. Especially designed to be used with computer
_____________.
b. ____________the cursor around the screen.
4. ________________
a. Used to input information and _________ into
the computer.
b. Many Styles:
1) ___________-Held
a) ____________ (pen)
b) ____________
2) ___________/Countertop
5. _________ ___________
a. Special pen used to input data.
b. ______________to light on the computer
screen.
c. Also allows you to ____________ complex images
and designs on the computer screen.
6. ____________Tablet
a. Flat _____________ surface connected to the computer.
b. Used for ____________pictures.
c. Often used by artists, designers and _______________.
d. Used in _______days to draw cartoon
characters.
7. ______________
a. _____________ shapes into signals that can
be read by a computer to ____________ an image.
b. Often used by real estate companies to scan pictures.
8. ________ _______________
a. Vast improvements are being made.
b. Problems with ____________ and pronunciation
differences.
9. Touch ______________Screen
a. _____________ input device to use.
b. Screen is sensitive to touch.
c. Found in supermarkets, hotel lobbies, etc.
10. ______________
a. Makes it possible for one computer to ______________
with another.
b. ______________ ____ ______________
1) Converts signals from _____________ to ______________
signals and then back again.
2) Used for the sending and receiving of information.
11. ______________Cameras
a. Used to take photographs of images in the ______________form.
b. Come in many styles.
1) save on disk
2) save on a memory card
III. The Central Processing
Unit (________)
A. CPU
1. Considered the "_________" of the
computer.
2. Faster, more __________ and more ___________
than the human brain but ____________ creativity.
3. It can only do what a human being has
programmed or ______________ it to do.
4. It receives data, instructions and programs
from any input device and ___________ them in memory temporarily.
5. 2 Main Components
a. _______________
b. ___________ ______________
B. Processor
1. _____________ the input or instructions and
then ________________them into usable results for the computer operator.
2. Performs all __________________
calculations.
3. Performs many ___________ tasks at
incredibly ___________ speeds.
4. A processor is very ___________.
5. Something to Think About pg. 152
C. _____________ Memory
1. A computer needs a _________ ___________of memory
to handle any __________ of information.
2. Main memory _____________ your computer to ____________
all the various types of information users may enter for a particular project.
3. 2 Types of Memory
a. ____________ _____________ Memory (ROM)
1) _______________ Memory
2) Your
computer can _________ instructions from it but it _________ write data or instructions
on top of the ROM or _____________ it in any way.
3) It must be built _________ the computer to be
able to __________ your machine.
4) It is ______ ________ when the computer is turned
off.
5) It does _______ ________ information.
6) ROM allows a special type of computer to control
a traffic light or play a arcade game.
b. ______________ ___________Memory (RAM)
1) Short-term or _____________ memory that remains
in use as long as your computer is turned_____.
2) ________ of the ___________you do on your
computer will be operated in the RAM area of the computer.
3) All software _____________ and information
typed _________ in RAM until
the power is
turned off.
4) RAM can be purchased and __________
5) _____________- ___ - Memory a computer takes
to hold approximately ________ letters, spaces or characters.
6) ______________- ___ - Memory a computer
takes to hold approximately___________ letters, spaces or characters.
7) ______________- ___ - Memory a computer
takes to hold approximately __________________ letters spaces or characters.
3. Something to Think About pg. 154
IV. Output and Output
Devices - Takes information and makes it _______________ and
_________________.
A. ________________
1. The screen that ____________ the information
received or input into the computer.
a. Produces a ___________ copy of information.
b. Most ___________ input device.
c. Changes you make are ____________ reflected.
d. It doesn't ___________ information but it
does reflect or repeat it.
e. Often called:
1) ___________ __________ screen (VDS)
2) ___________ ___________ __________
f. A ___________ screen can be used in place
of it.
2. 2 Types of Monitors
a. _______________
1) ________ color
2) usually white, amber or green
3) Said to be the least tiring on your eyes.
b. _______________ Monitor
1) Several types and sizes.
2) _____________- Quality and clarity of characters
or images (_____- dots per inch).
B. _______________
1. Produces a _________ copy of information
created.
2. __________ most common output device.
3. Types of Printers
a. ___________Printer- A ribbon is used
and ___________ the paper.
1) _________ __________ Printer
a) Produces _______ quality print.
b) Very __________.
2) _________ __________ Printer
a) Faster
& _______ expensive.
b) Produces near letter quality (_____)
c. __________quality.
b. _______-Impact Printers - No ribbon is used.
1) ____________Printer (Bubble Jet)
a) Most __________ printer type.
b) Usually prints in color or black ink.
c) ______ ___________ is used to spray
ink on paper.
d) __________ quality and speed.
2) ______________ Printer
a) Uses ___________ much like a copy machine.
b) Sprays toner on the paper and then __________
it into the paper.
c) Very high __________ (quality) & fast.
d) More___________.
e) May use color (very expensive).
3) ______________
a) Uses colored pens/pencils to produce detailed
_____________.
b) Often used by architects (_____).
c) Draws __________ lines.
d) Comes in many sizes.
C. Voice ________________
1. Takes computer information and turns it into
human-_____________ spoken words.
2. Lacks the sound and tone that gives our
conversation special meaning (___________).
3. Ex:
Automated phones and answering machines
D. Computer Output Microfilm (______)
1. Data and information are stored on
microfiche or microfilm.
a. ______________- Small _______________ shapes
of film that contain large amounts of data.
b. ____________ - _________ or spools of film containing
large amounts of data.
2. Often found in_______________.
V. _______________-Storage
Devices
A. _____________ Disk
1. Small ____________ storage device made of
flexible material.
2. Most ___________ used secondary storage
device.
3. Sizes
a. past:
____"
b. today:
________" and ________"
B. Disk ______________
1. The unit which _______ a disk and reads or
writes information on it.
2. _________/________ Heads - Parts of
the disk drive that _______information and allow it to be ____________or
written on a disk.
C. ___________Disk
1. __________ units which contain a hard disk.
2. _________Disk - Type of storage
device made of _________ material that can hold vast amounts of data.
D. _____________Tape
1. Magnetically sensitive ________that allows
you to save ___________and _________.
2. Often used to ___________ information.
E. _________ ___________
1. Can save ___________ information (entire set
of encyclopedias).
2. ______________
a. Compact Disc ________ ________ __________
b. _________ data, but that data _________ be changed.
3. CD____________
a. Compact Disc Write Once/Read Many
b. Today:
CDR: Compact Disc ____________
4. CD_______
a. Compact Disc ___-_________________
b. Can ________ information and _______ over it____________.
VI. Types of Computers
A. ___________Computer
1. Style we are most familiar with.
2. Other Names:
a. __________ ____________ (PC)
b. micros
c. home computers
d. small business computer
3. Found in_________, _________ and small businesses.
4. The processor is on a computer ______ (Intel
4).
5. ________-_________ System -
_____connected to other computers.
B. ________ Computer
1. Larger and more_____________.
2. Can run ___________computers at one time.
3. Greater storage capacity.
4. Today it is difficult to determine
__________ mini computers and micro computers.
C. _________________
1. ________ _________system.
2. ____________ of Information System for many
large corporations.
3. Very __________ priced!
4. Fast & Powerful, can connect to _______
of computers.
D. ______________ Computers
1. Computers of the ___________ government.
2. used for:
a. space _______________
b. weather ________________
c. "star
wars" ___________
E. Portable & ____________ Computers
1. Smaller & weigh less than home
computers.
2. ___________computers are not as small as
laptops.
3. ___________ are small enough to be carried
in a briefcase.
VII. Networking
A. __________________
1. Def. - A ______________ of computers ________________together
for the purpose of
____________
information and peripherals.
2. It may just mean that ___________ computer
stations are connected to one computer.
3. It also means _______________ all computers
and equipment together so that communication can take place between systems and
data can be__________.
4. Electronic Mail (email) and the Internet
5. 2 Basic Networking Concepts: Time Sharing & Distributed Processing
B. _________ ______________
1. When several computers are hooked up to one ___________
and ________ all processing________.
2. Often used in banks, airports & ticket
purchasing agencies.
3. ___________ Terminals
a. Contains ______ a ___________and ______________
and is connected
_____________ to
the CPU of the mainframe computer.
b. Does _______ contain a "brain"
(CPU)
4. Main ________________
a. Everyone is sharing the _________
information.
b. Data is constantly being ___________.
5. Main _________________
a. If the CPU _________ down, all work stops
and everyone connected to the system is _________ to work.
b. Fairly_________: Someone in the company must be __________ in
how to manage the system and keep it functioning properly.
C. ____________ ____________ & Local Area
Networks (______)
1. _____________ computers (with CPU/brain) are
___________ by special cables and hardware.
2. LAN - _______ ________ __________
3. _________ - Unit in a LAN that ________ programs
and __________ the use of peripherals.
a. Files, programs and data can be __________ back
and forth through the server.
b. Information can also be sent to the server
for ____________.
4. Each computer does its own _______________
so if one breaks down the others will be fine.
D. ___________ & __________ of Your Computer
System
1. Use a _________ protector.
2. Shut down and ________ your computer in a lightening________.
3. Unplug the computer when you go _______ from
home.
4. Don't put a________, ___________, ________,
etc. around the computer.
5. Don't _________ disks.
6. Have a fire extinguisher___________.
7. First read ________ instructions completely.
8. Clean ______occasionally with a ________
cloth.
9. Clean __________ with an _______-static
cloth.