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 […]
CF/U4 Topic 4 Compilers & Interpreters
Compiler A compiler is a computer program that transforms code written in a high-level programming language into the machine code. It is a program which translates the human-readable code to […]
CF/U4 Topic 5 Characteristics of Good language
Every computer requires appropriate instruction set (programs) or language to perform the required task. The quality of the processing depends upon the given instructions. If the instructions are improper or […]
CF/U5 Topic 2 Batch Processing
Batch processing is a technique in which an Operating System collects the programs and data together in a batch before processing starts. An operating system does the following activities related […]
CF/U5 Topic 3 Multitasking
Multitasking is when multiple jobs are executed by the CPU simultaneously by switching between them. Switches occur so frequently that the users may interact with each program while it is […]
CF/U5 Topic 4 Multiprogramming
Sharing the processor, when two or more programs reside in memory at the same time, is referred as multiprogramming. Multiprogramming assumes a single shared processor. Multiprogramming increases CPU utilization by […]
CF/U5 Topic 5 Time Sharing
A time sharing system allows many users to share the computer resources simultaneously. In other words, time sharing refers to the allocation of computer resources in time slots to several programs simultaneously. For example […]
