What is difference between IT and Computer Science?
Image result forAt
Meanwhile,
At
Meanwhile,
What is Hardware and write the Catagories of Hardware?
•
Hardware (computer
hardware or devices): The computer and its associated equipment.
–
Input devices
–
Processors
–
Output devices
–
Secondary storage devices
•
Input: The
data or information entered into a computer or the process of entering data or
information into the computer for processing, storage and retrieval, or
transmission.
–
Keyboards
–
Point-of-sale terminals
–
Mouse
–
Image scanners
–
Bar code scanners and wands
–
Microphones
–
Prerecorded sources
•
Bar Code: A computer-readable code consisting of bars or lines of varying widths or
lengths.
•
Wand: An
input device used to read a bar code and input this information directly into a
computer.
•
Multimedia: A system that contains standard PC features but also has the capability
to handle audio, video, animation, and graphics.
•
Processor/Central Processing Unit (CPU): A set of electronic circuits that perform the computer’s processing
actions.
•
Microprocessor: The smallest type of processor, with all of the processing capabilities
of the control unit and ALU located on a single chip.
Chip: A
collection of electronic components in a very small, self-contained package
•
System Board (Mother Board): The system unit in a microcomputer, located on a board mounted on the
bottom of a computer base.
•
Primary Storage (Main Memory): Storage within the computer itself. Primary memory holds data only
temporarily, as the computer executes instructions.
•
Output: The
results of inputting and processing data and information returned by the
computer, either directly to the person using the system or to secondary
storage.
•
Control a printer
•
Direct a display
•
Control another device
•
Generate sounds
•
Initiate transmission of information
•
Secondary Storage (Auxiliary Storage): A storage medium that is external to the computer, but that can be read
by the computer; a way of storing data and information outside the computer
itself.
•
Diskettes
•
Zip Disks
•
Hard Disks
•
Optical Disks
•
Magnetic Tape
•
Magnetic Disks: A general term referring to two types of storage disk: the
flexible/floppy disk and the hard disk.
•
Zip Disks: Similar to diskettes, but housed in a hard plastic case. These disks can
store 70 to 175 times more and can store and retrieve data more quickly than
diskettes.
•
Read Only: A type of disk that information can be read from but not written onto.
•
CD-ROM disk: Short for “compact disk – read only memory,” an optical storage medium
that permits storage of large amounts of information. CD-ROM disks can only be
written to and cannot be erased.
Drive: The
device containing a secondary storage medium’s read/write unit
•
Peripheral Equipment: A general term used for any device that is attached to a computer system.
•
Software: The general term for a set of instructions that controls a computer or a
communications network.
•
Program: A
set of instructions that directs a computer to perform certain tasks and
produce certain results.
•
Communication Program: A program that manages the interaction between a computer system and a
communications network and the transmission of data, programs, and information
over the network.
what is Computer and Identify the five components of a computer system
•
Computer: An electronic system that can be instructed to accept, process, store,
and present date and information.
•
Computer System: A computer and all the hardware interconnected with it.
–
Hardware
–
Programs
–
Information
–
People
–
Procedures
What is Information Technology/ Microcomputers,write a types of Microcomputer,Describe Functions of Information Tehnology And Give Solution Of IT?
Informaton
Technology:
•
An electronic system that
can be instructed to accept, process, store, and present data and information.
•
Computers come in four sizes:
– Microcomputers
– Midrange
computers
– Mainframes
– Supercomputers
•
Microcomputers: A
relatively compact type of computer, the most common of all, easily outsells
all other types of computers annually for use in business and at home.
•
Five types of Microcomputers:
– Desktop
Computers
– Notebook
Computers/Laptop Computers
– Tablet PCs
– Personal
Digital Assistants
– Palm PCs
•
Midrange computers and Mainframes: A computer uses to interconnect people and large sets of information.
More powerful than a microcomputer, the minicomputer is usually dedicated to
performing specific functions.
•
Supercomputers: The most powerful of all computers, supercomputers were designed to solve
problems consisting of long and difficult calculations.
•
Hardware: The computer and its associated equipment.
•
Program: Hardware: The computer and its associated equipment.
•
Program: A
set of instructions that directs a computer to perform certain tasks and
produce certain results.
•
Software: The general term for a set of instructions that controls a computer or a
communications network.
•
System: A
set of components that interact to accomplish a purpose.
•
Information System: A business information system designed to produce the information needed
for successful management of a structured problem, process, department, or
business.
•
Communication: The sending and receiving of data and information over a communications
network.
•
Communications Network: A set of locations, or nodes, consisting of hardware, programs, and
information linked together as a system that transmits and receives data and
information.
•
Data Communication: The transmission of data and information through a communications medium.
•
The capability to do something well.
•
Information technology know-how consists of:
– Familiarity
with the tools of IT; including the Internet
– Possession
of the skills needed to use these tools
– An
understanding of when to use IT to solve a problem or create an opportunity
The Principles of Information Technology/The Functions of Information
Technology
•
Capture: The
process of compiling detailed records of activities.
•
Processing: The process of converting, analyzing, computing, and synthesizing all
forms of data or information.
–
Data Processing
–
Information Processing
–
Word Processing
–
Image Processing
–
Voice Processing
•
Generation: The process of organizing information into a useful form, whether as
numbers, text, sound, or visual image.
•
Storage and Retrieval: Storage is the computer process of retaining information for future use.
Retrieval is the process by which a computer locates and copies stored data or
information for further processing or for transmission to another user.
•
Transmission: The computer process of distributing information over a communications
network.
•
Electronic Mail, or E-Mail
•
Voice Messaging, or Voice Mail
•
Solving Problems
–
Problem: A
perceived difference between an existing condition and a desired condition.
–
Problem Solving: The process of recognizing a problem, identifying alternatives for
solving it, and successfully implementing the chosen solution.
•
Television
•
Education
•
Training
•
Entertainment
•
Shipping
•
Paperwork
•
Money and Investments
•
Agriculture
•
Taxation and Accounting
•
Health and Medicine
•
Manufacturing
•
Journalism
•
Energy
•
Sports
•
To be Informed
•
To Make Proper Use of IT
•
To Safeguard
