COMPUTER APPLICATION SOFTWARE OBJECTIVE QUESTIONS
1) Word processing, spreadsheet, and photo-editing are examples of _ a) application software. b) system software. c) operating system software. d) platform software. 2) Application software is designed to accomplish _ a) real-world tasks. …
BASIC PROGRAMMING 2
BASIC MATHEMATICAL FUNCTIONS The BASIC language will allow the following functions to be used within arithmetic expressions. 1) BASIC ABS Function: The ABS function returns the absolute value of an expression. Format ABS(X) Where X is a number, numeric variable…
COMPUTER SYSTEM SOFTWARE OBJECTIVE QUESTIONS
1) _ is a set of computer programs used on a computer to help perform tasks. a) An instruction. b) Software. c) Memory. d) A processor. 2) System software is a set of programs that…
ZONE PRINTING AND TABULATION
ZONE PRINTING The output of information can be divided into zones across the screen or page by using commas between variable names and / or literals. The width of each zone is the same across the screen or page, however,…
OUTPUT DEVICES OBJECTIVE QUESTIONS
1) After a picture has been taken with a digital camera and processed appropriately, the actual print of the picture is considered _ a) data. b) output. c) input. d) the process. 2) A(n) _…
BASIC LANGUAGE STATEMENT
BASIC statements are the principal components of BASIC programs. The general format of BASIC statements is: Where xxx is the line number; Reserved word is the statement (instruction) type; and Parameters are the variables used in conjunction with the…
INPUT DEVICES OBJECTIVE QUESTIONS
1) All of the following are examples of input devices EXCEPT a _ a) scanner. b) mouse. c) keyboard. d) printer. 2) Which of the following is an example of an input device? a) scanner.…
BASIC OPERATORS
Operators perform mathematical or logical operations on values. The operators provided by BASIC are divided into four categories: Arithmetic. Relational. Logical. Functional. (a) Arithmetic Operations: Operators BASIC performs addition, subtraction, multiplication, division and exponentiation, as well as more complicated…
COUNTING DEVICES FROM 20TH CENTURY TO DATE OBJECTIVE QUESTIONS
1) LISP was developed by _ a) John Mc Carthy. b) Blaise Pascal. c) Dr. Hollerith. d) John Napier. 2) The first computer made available for commercial use was _ a) Mark – 1. …
BASIC PROGRAMMING LANGUAGE 1
BASIC is one of the earliest and simplest programming languages. It is a very powerful language as a tool for an amateur programmer. In other words, it is used to teach beginners the rudiments of programming. BASIC is an acronym…
PRE COMPUTER AGE TO 19TH CENTURY OBJECTIVE QUESTIONS
1) Which of the following is still useful for adding number? a) EDSAC. b) ENIAC. c) Abacus. d) UNIVAC. 2) The earliest calculating devices are a) Abacus. b) Clock. c) Difference Engine. …
DATA AND INFORMATION OBJECTIVE QUESTIONS
1) A process known as _ is used by large retailers to study trends. a) data mining. b) data selection. c) POS. d) data conversion. 2) Which of the following is NOT one of the…
WIRELESS NETWORK
Wireless network refers to any type of computer network that is not connected by cables of any kind. It is a method by which homes, telecommunications networks and enterprise (business) installations avoid the costly process of introducing cables into a…
BASICS OF COMPUTER HARDWARE OBJECTIVE QUESTIONS
1) _ is any part of the computer that you can physically touch. a) Hardware. b) A device. c) A peripheral. d) An application. 2) The metal or plastic case that holds all the physical…
HANDLING COMPUTER FILES
BASIC OPERATIONS OF COMPUTER FILES File Operations: These deal with the physical movement of data in and out of files. User programs effectively use file operations through appropriate programming language syntax The File Management system manages the independent files and…
OVERVIEW OF COMPUTER SYSTEM OBJECTIVE QUESTIONS
1) _ is the science that attempts to produce machines that display the same type of intelligence that human do. a) Nanoscience. b) Nanotechnology. c) Simulation. d) Artificial Intelligence. 2) The components that process data…
INTERNET
The Internet can be defined as a network of computers, designed to receive and send data in the form of e-mails, media, blogs and webcasts, etc. It is like a super-massive server, filled with seemingly infinite information and used by…
ALGORITHMS AND FLOWCHART
ALGORITHM An algorithm is a set of instructions, sometimes called a procedure or a function that is used to perform a certain task. Characteristics of an Algorithm Finiteness: An algorithm terminates after a finite numbers of steps. Definiteness: Each…
CLASSIFICATION OF COMPUTER NETWORK
Computer network can be classified into three. They are Network Classification Based on Geographic Proximity. Network Classification Based on Host Roles. Network Classification Based on Network Topologies. Network Classification Based On Geographic Proximity 1) Local Area Network (LAN): The…
BENEFITS OF NETWORKING
Sharing information: The computer can help you centralize the information and maintain control over it if you select one computer to store the shared information and have all other computers reference the information on that computer over the network. Sharing…
NETWORK DEVICES
1) Hub: Hub also called a repeater hub is the basic networking component used in traditional 10-Mbps Ethernet networks to connect network computers to form a local area network (LAN). A common connection point for devices in a network. Hubs…
NETWORK TOPOLOGY
Network topology is the arrangement of the various elements such as links, nodes, etc. of a computer. Distances between nodes, physical interconnections, transmission rates, and/or signal types may differ between two networks, yet their topologies may be identical. It is…
NETWORKING
A network consists of two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications. In the world of computers, networking is the practice of linking two or…
MEMORY UNITS
This unit can store instruction, data and intermediate results. This unit supplies information to the other units of the computer when needed. A memory is just like the human brain. Computer memory is the storage space in computer where data…
CONCEPT OF COMPUTER FILES
Many tasks in an information oriented society require people to deal with voluminous data and to use computers to deal with this data efficiently and speedily. FILE TERMINOLOGIES a) Files deal with storage and retrieval of data in a computer.…
INTRODUCTION TO WORLD WIDE WEB
WWW The World Wide Web, or Web, is a very large set of specially formatted documents that are interlinked and can be accessed through the Internet. It is a way of accessing information over the medium of the Internet. It…
PROGRAM DEVELOPMENT
A computer program is a sequence of instructions written to perform a specified task with a computer. A program is a set of instructions written by a programmer. Program contains detailed instructions and complete procedures for performing the relevant tasks.…
SYSTEMS DEVELOPMENT CYCLE
Systems Development Life Cycle (SDLC) puts emphasis on decision making processes that affect system cost and usefulness. These decisions must be based on full consideration of business processes, functional requirements, and economic and technical feasibility. The primary objectives of any…
COMPUTER DATA CONVERSION
Data conversion is the conversion of computer data from one format to another. Throughout a computer environment, data is encoded in a variety of ways. For example, computer hardware is built on the basis of certain standards, which requires that…
ALTERNATIVE LOGIC GATE
A logic gate is a general purpose electronic device used to construct logic circuits. All logic gates have inputs and outputs. The state of the output is set by the input states using different rules depending on the type of…
STANDARD SINGLE LOGIC GATE
LOGIC CIRCUIT 1 (STANDARD SINGLE LOGIC GATE) Logic gate is a computer circuit with several inputs but one output that can be activated by particular combinations of inputs. A logic gate is an elementary building block of a digital circuit.…
INTRODUCTION TO PROGRAMMING LANGUAGE
A programming language is a formal language for communicating with a computer without the ambiguity of human languages. A programming language has to be executed by a computer or design of the language degenerates into a futile intellectual exercise. All…
COMPUTER APPLICATION SOFTWARE
Application software is the set of programs necessary to carry out operations for a specified application. Application software consists of Programs that direct computers to perform specific information processing activities for end users. These programs are called application packages because…
COMPUTER SYSTEM SOFTWARE
Computer software is defined as a set of programs and procedures that are intended to perform specific tasks on a computer system. A software program is a set of instructions that are aimed at changing the state of computer hardware.…
OUTPUT DEVICES
An output device is any peripheral device that converts machine-readable information into people-readable form such as a monitor, printer, plotter and voice output device. Output devices are used to display input data that has been processed by the computer into…
INPUT DEVICES
An input device for a computer is anything that sends information to the CPU to perform a specific function. A computer has the ability to use many different types of input devices to provide a unique experience to each user.…
COMPUTING DEVICES FROM 20TH CENTURY TO DATE
The rise of computers dates back to ancient times and to the development of mathematics and calculators. Computers began taking shape in the late 1800s and early 1900s. They were once the size of an entire room and required great…
PRE COMPUTER AGE TO 19TH CENTURY
COUNTING DEVICES (PRE COMPUTER AGE TO 19TH CENTURY) In ancient times, people used fingers to perform the calculations such as addition and subtraction. Even today, simple calculations are done on fingers. Soon, mankind realized that it would be easier to…
DATA AND INFORMATION
Each organisation, regardless of its size or purpose, generates data to keep a record of events and transactions that take place within the business. Generating and organising this data in a useful way is called data processing. In this lesson,…
BASICS OF COMPUTER HARDWARE
Computer hardware refers to the physical parts or components of a computer such as monitor, keyboard, hard drive disk, mouse, printers, graphic cards, sound cards, memory, motherboard and chips, etc all of which are physical objects that you can actually…
COMPUTER SYSTEM
A system of interconnected computers that share a central storage system and various peripheral devices such as a printers, scanners, or routers. Each computer connected to the system can operate independently, but has the ability to communicate with other external…
CLASSIFICATION OF COMPUTERS
Computers are available in different sizes and types. Some computers are designed to be used by a single user only, whereas some computers can handle the needs of many users simultaneously. Computers also differ based on their data-processing abilities. In…
INTRODUCTION TO COMPUTER
The term ‘computer‘ is derived from the word ‘compute’, which means to calculate. A computer is an electronic machine, devised for performing calculations and controlling operations that can be expressed either in logical or numerical terms. In simple words, a…
ENTERTAINMENT IN THE HOME
The family as a group or individual members often receives and entertains visitors or guests in the home, on occasions such as birthdays, child naming ceremonies, parties, etc. These occasions require different kinds of preparations and refreshments or food. You…
FAMILY NEEDS AND RESOURCES
Family needs are many. The resources for meeting these needs are however limited. It is necessary to find ways of using the resources so that the important needs are satisfied. This involves management. Before you learn how to manage the…
SOME VOLCANIC ERUPTIONS AND DISTRIBUTION OF VOLCANOES IN THE WORLD
In the history of mankind perhaps the most disastrous eruptions were those of Mt. Vesuvius, Mt. Krakatoa and Mt. Pelee. Mt. Vesuvius Mt. Vesuvius, standing 1200m (4000 feet) above the Bay of Naples, erupted violently on 24 August A.D.…
PROCESSING OF RUBBER AND PLASTICS
A) Plastic Plastics are manufactured through the combination of several different compounds obtained chiefly from cellulose, coal and petroleum. There are numerous techniques or methods for producing plastic objects. Some of these are Blow moulding, Injection moulding, Rotational moulding, Thermoset…
PROCESSING OF CERAMICS
A) Methods of Making Clay In order to process ceramics, mud, or clay is obtained and cleared of all plant material, stones, paper, metal scraps, wooden pieces and other impurities. Afterwards, it is mixed with water and thoroughly pounded until…
PROCESSING OF METALS
Many metals do not naturally exist in a free state in the ground. They occur in association with other substances collectively referred to as impurities. The combination of these impurities and the metal is referred to as the ore. It…
COMMON TIMBER DEFECTS
A defect is anything present in wood, which results in the lowering of its quality or value. A defect can be caused by the action of man, insects, and fungi or may naturally occur in the growing tree. Some defects…
Study Guide
