Lesson Notes, Audio Lessons, Exam Questions
Lesson Notes, Audio Lessons, Exam Questions
This section covers Computer Studies, ICT, and IT lessons for all class levels. Whether you are starting with the basics of computer literacy or advancing into programming and networking, you’ll find organized content that aligns with school curricula.
Students and teachers can explore topics such as computer hardware, software, internet usage, word processing, spreadsheets, coding basics, and cybersecurity.
These resources are ideal for boosting classroom learning, preparing for examinations, and improving real-world tech skills necessary for academic and professional success.
Learn Computer Studies, ICT, and IT for all classes with carefully structured topics. Access lessons designed to build digital skills from basics to advanced levels.
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 actually the physical system is. In practice, the initial system…
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 through maintenance of the completed application. Various SDLC methodologies have…
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 and formatted, a method for inserting and manipulating graphic images,…
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 button to bring start menu b) From the pull down…
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 and software called word processor. Word processor enables you…
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 supply power to the system. Switch on the voltage regulator(…
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 mobile phone is an electronic device for making calls across…
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 and archival Video Conferencing This is a technology whereby…
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 can also be described as a series of actions or…
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 (1940 – 1956) First generation computers were those manufactured between…
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 execute any kind of computation given properly programmed control without…
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, damask and matelassé. It was invented by Joseph Marie Jacquard…
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; Abacus (Chinese) Napier’s Bone (John Napier) Slide Rule (William Oughtred)…
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, subtraction and multiplication. These devices were used for the usual barter trade…
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 of the mouth. Drum beating Beating the drums was a…
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 is the process of transferring something from one location to…
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 some important health concerns which are; Repetitive Strain Injury (RSI)…
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 that if it were taken away we would lead radically…
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 and to create, disseminate, store and manage information. These technologies…
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 of a computer room must be put into consideration. Components…