SYSTEM DEVELOPMENT CYCLE II
I. Preliminary Study Is the first stage of system development life cycle. This is the brief investigation of the system under consideration and gives a clear picture of what… Read More »SYSTEM DEVELOPMENT CYCLE II
Computer Studies/ICT/IT (All Classes)
System Development life Cycle
The System Development life Cycle (SDLC) is a conceptual model used in project management that describes the stages involved in an information system development project from an initial feasibility study… Read More »System Development life Cycle
Presentation Package
A presentation package is a software package used to display information in the form of slide show. It has three major functions: an editor that allows text to be inserted… Read More »Presentation Package
WORD PROCESSING ENVIRONMENT
TYPES OF TOOL BARS There are two types of tool bars in word processor a) Standard tool bar b) Formatting Toolbar Using the Microsoft Word steps a) Click the start… Read More »WORD PROCESSING ENVIRONMENT
Word Processor
Word processing is the art of using computer to type and edit text and graphics in letters, reports, term papers etc. To perform word processing you need a computer set… Read More »Word Processor
BASIC COMPUTER OPERATIONS
BOOTING Booting is a process that starts operating system when the user turns on the computer. Steps in booting a Computer: Put on the switch on the main socket to… Read More »BASIC COMPUTER OPERATIONS
ICT BASED GADGETS
ICT BASED GADGETS ARE THE FOLLOWING Mobile phones Computer Fax machines Automated Teller Machine Dispensing machines Point of Sales Machine-Automated Cash Register(ACR) Radio sets Television sets Mobile Phones: A… Read More »ICT BASED GADGETS
Important application area of ICT
As mentioned in our previous lesson some important application area of ICT are: Video Conferencing Tele conferencing Tele Presence Tele Communicating and Network Tele Computing Messaging Information Search, retrieval… Read More »Important application area of ICT
DATA PROCESSING
Definition of Data Processing Data processing is the process of producing meaningful information by collecting all items of data together and performing operations on them to extract information. Data processing… Read More »DATA PROCESSING
Generations of Computers
Generations of Computers Generation of computers is the developmental stages that the computer has gone through. There are 5 generations of computers and their accompanying innovations. First Generation – Vacuum Tubes… Read More »Generations of Computers
ELECTRONIC COUNTING DEVICES AND MODERN COMPUTER
JOHN VON NEUMANN’S MACHINE In 1945, mathematician John von Neumann undertook a study of computation that demonstrated that a computer could have a simple, fixed structure, yet be able to… Read More »ELECTRONIC COUNTING DEVICES AND MODERN COMPUTER
ELECTRO-MECHANICAL COUNTING DEVICES
Electro-mechanical Counting Devices JOSEPH JACQUARD’S LOOM The Jacquard machine is a device fitted to a power loom that simplifies the process of manufacturing textiles with such complex patterns as brocade,… Read More »ELECTRO-MECHANICAL COUNTING DEVICES
MECHANICAL COUNTING AND CALCULATING DEVICES
Mechanical Counting and Calculating Devices As a result of the disadvantages of the early counting devices, more advanced mechanical counting and calculating devices were invented. Some of these devices are;… Read More »MECHANICAL COUNTING AND CALCULATING DEVICES
HISTORICAL DEVELOPMENT OF COMPUTERS
HISTORICAL DEVELOPMENT OF COMPUTERS: EARLY COUNTING DEVICES Definition and Examples of Early Counting Devices Early counting devices are devices that were used in the early days to perform arithmetic operations such as addition of numbers,… Read More »HISTORICAL DEVELOPMENT OF COMPUTERS
ANCIENT METHODS OF TRANSMITTING INFORMATION
Oral method This is one of the oldest methods of transmitting information. It is the era of our great grandfathers when information was sent to people only through the use… Read More »ANCIENT METHODS OF TRANSMITTING INFORMATION
INFORMATION TRANSMISSION
Definition of Information This is data already processed into a meaningful form for decision making. Information conveys meaning and is useful to one or more people. Definition of Transmission This… Read More »INFORMATION TRANSMISSION
HEALTH CONCERNS OF COMPUTER USE
Users are a key component in any information system. Therefore, protecting users is just as important as protecting hardware, software and data. The widespread use of computers have led to… Read More »HEALTH CONCERNS OF COMPUTER USE
ICT AND SOCIETY
Many of us go through our daily routine without noticing how many times we come into contact with computers. Computer technology has become such a part of our daily lives… Read More »ICT AND SOCIETY
ICT APPLICATION IN EVERYDAY LIFE
Meaning of ICT ICT is an acronym which stands for Information and Communication Technology. It can be described as a diverse set of technological tools and resources used to communicate… Read More »ICT APPLICATION IN EVERYDAY LIFE
COMPUTER ROOM MANAGEMENT ETHICS
Definition of Computer Room Computer room is a room specially created for keeping computers and other peripheral devices. It is also called computer laboratory. In designing this room, the components… Read More »COMPUTER ROOM MANAGEMENT ETHICS