CF/U1 Topic 3 Limitations of Computers
Limitations are the drawbacks of the computer system in which humans outperform them. Lack of common-sense This is one of the major limitations of computer systems. No matter how efficient, […]
CF/U1 Topic 4 Basic Computer Organization
CPU OPERATION The fundamental operation of most CPUs To execute a sequence of stored instructions called a program. The program is represented by a series of numbers that are kept […]
CF/U1 Topic 5 Generations of Computers
A computer is an electronic device that manipulates information or data. It has the ability to store, retrieve, and process data. Nowadays, a computer can be used to type documents, […]
CF/U2 Topic 1 Input Device – Part 1
Input device enables the user to send data, information, or control signals to a computer. The Central Processing Unit (CPU) of a computer receives the input and processes it to […]
CF/U2 Topic 2 Input Device – Part 2
Scanner Magnetic Ink Character Recognition (MICR) Optical Character Reader (OCR) Optical mark recognition (OMR) Scanner The scanner uses the pictures and pages of text as input. It scans the picture […]
CF/U2 Topic 3 Output Device
An output device is any device used to send data from a computer to another device or user. Most computer data output that is meant for humans is in the […]
CF/U2 Topic 4 Microfilm
Microfilm is an analog storage medium using film reels which are exposed and developed into photographic records using a photographic process. It is typically used to store paper documents such […]
CF/U2 Topic 5 Microfiche
Microfiche is a thin photographic film, usually four by five inches, which is capable of storing information in miniaturized form. This technique is used in preserving fragile materials such as […]
CF/U2 Topic 6 Voice Recognition and Response Devices
Voice Recognition Alternatively referred to as speech recognition, voice recognition is a computer software program or hardware device with the ability to decode the human voice. Voice recognition is commonly […]
CF/U3 Topic 1 Storage Devices
A storage device is any computing hardware that is used for storing, porting and extracting data files and objects. It can hold and store information both temporarily and permanently, and […]
CF/U3 Topic 2 Primary Storage Devices
Primary Storage, also known as main storage or memory, is the main area in a computer in which data is stored for quick access by the computer’s processor. Information must […]
CF/U3 Topic 3 Secondary Storage Devices
A secondary storage device refers to any non-volatile storage device that is internal or external to the computer. It can be any storage device beyond the primary storage that enables […]
CF/U3 Topic 4 Comparison of Sequential and Direct- Access Devices
Difference between Sequential and Random Access Files When we are talking about sequential or random access to data files we refer to the way data is written or read from […]
CF/U4 Topic 1 Computer Software
Software is a set of programs, which is designed to perform a well-defined function. A program is a sequence of instructions written to solve a particular problem. There are two […]
CF/U4 Topic 2 Relationship between Hardware and Software
Computer hardware A computer basically consists of various electronic components which are supported by electrical devices and mechanical systems. All these electronic, electrical. Mechanical devices used in a computer are […]
CF/U4 Topic 3 Computer Languages: Machine Language
Just as humans use language to communicate, and different regions have different languages, computers also have their own languages that are specific to them. Different kinds of languages have been […]
