How to design a simple business letter head
Data processing is the collection and manipulation of items of data to produce meaningful information. Data processing is the process of manipulation data to generate information. Data processing methods are techniques used to process/sort different types of data.
Post Views: 488 THE ELECTRONIC COMPUTER Characteristics of a Computer Speed – high speed of operation Storage – Large storage…
COMPUTER STUDIES PAST QUESTIONS
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A computer professional maybe:
(1)A person working on the field of Information Technology
(2)A person who has undergone training in a computer related field colleges, universities and computer institutes.
(3)A person who has an extensive knowledge in the area of computing.
1.Click on start button at the bottom left of the desktop
2.A pull-up menu will appear
3.Click on “All Program”. A pull-up menu will appear again.
4.More the mouse pointer to Microsoft office. A drop down menu will appear.
5.Click on “Microsoft Excel”
6.Wait while the Microsoft Excel loads and appear on the desktop.
A spreadsheet interactive computer application program for organization, analysis and storage of data in tabular form.
A spreadsheet application is a computer program such as Excel, open office Cacl, or Google Docs spreadsheets. An electronic spreadsheet is a computer program that is used for storing, organizing and manipulating data.
ICT (Information and Communication technology) is an umbrella term that includes any communication, encompassing; radio, television, cellular phones, computer and network hardware and software, satellite systems and so on as well as the various services and applications associated with the much as video conferencing and distance learning.
ICT AS A TRANSFORMATIONAL TOOL
ICT covers any product that will store, retrieve manipulate transmit or receive information electronically in a digital form. E.g. computers, digital television, email.
Information Technology (IT) refer to the systems used to store and manage information through the use of technologies such as computers.
Information System (IS) means a computer-based system to manage information. The system usually receives information, validates it, do some calculation or processing, stores the data and outputs information.
This is a graphic program that can be used to create drawing on a blank page or on top of other pictures in the computer.
Paint is incorporated with windows. It is also used to open and edit pictures.
To load paint, take the following steps
Click on Start button
Point on All Programs
Click on Accessories
Click on Paint
Graphic is a symbol produced by a process such as drawing, writing, sketching etc.
Computer graphics are symbols that are displayed on the screen of a Visual Display Unit (VDU) which are considered as diagrammatic that includes pictures, Clip Art, regular/irregular shapes, Smart Art, Charts, Map etc.
Example 1: A BASIC program has the following
Line number(s) (b) Remark (REM) (c) Assignment (LET, INPUT, DATA) (d) Output statement (PRINT, WRITE) (e) Terminators (END, STOP) (f) Conditional statement (IF, ELSE, AND, OR, etc)
REM Program to write (or print) numbers 1 to 20.
20 A = 0; B = 0
30 INPUT a
40 IF A<1 THEN GO TO 30
BASIC PROGRAMMING LANGUAGE
The original BASIC language was designed on May 1, 1964 by John Kemeny and Thomas Kurtz and implemented by a team of Dartmouth students under their direction.
The acronym BASIC comes from the name of an unpublished paper by Thomas Kurtz. BASIC was designed to allow students to write mainframe computer programs for the Dartmouth time sharing system.
Program: A program is a set of instructions that the computer needs to execute a task or series of tasks.
Programming Language: This is a computer language that is a standard means of communication technique for expressing instructions to a computer. It is a language that specified instructions to be executed on a computer.
Programming: This is the act of writing programs. It is also the act of writing programs which instruct the computer on what to do, how to do and when to execute task.
Conversion of other bases to denary system. To convert numbers in the other bases to denary system, expand the given number in power of its bases.
1. Convert 35416 to denary
35416 = 3 x 162 + 5 X 161 + 4 x 160
= 3 x 256 + 5 x 16 + 4 x 1
Number bases refer to ways of counting numbers. Counting started way back in the ancient times when began counting first, with his fingers.
He counts in tens maybe because he has ten fingers and this is called decimal system of counting.
There are different bases of counting,
A computer language translator is a program that translates a set of code written in one programming language into a functional equivalent of the code in another programming language.
Translator – usually included within programming software – translators convert high-level code into machine code.
OUTPUT DEVICES: An output device is any piece of computer hardware that is used to output data that has been previously entered into a computer or similar processing device.
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. The operating system is a component of the system software in a computer system
Computer software or simply software is any set of instructions that direct a computer to perform specific operations. Computer hardware and software require each other and neither can be realistically used without the other.