Computer Studies/ICT/IT (All Classes)

The Processing Device

The Processor Process: – Process is the operation of data or information as per given instruction. It is totally internal process of the computer system. CPU (Central processing Unit) is the main processing device of the computer   The main unit inside the computer is the CPU. This unit is responsible for all events inside

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CARING FOR COMPUTER HARDWARE

Hardware is the physical computer equipment that we can see and touch. They include: The input devices such as a mouse and keyboard, the processing device like system unit. The output device like printers and video display units (VDU). Other hardware includes speaker, scanner, microphone and joystick.   STEPS FOR CARING FOR COMPUTER HARDWARE Position

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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, damask and matelassé. It was invented by Joseph Marie Jacquard in 1804. The loom was controlled by a chain of cards, a number of punched

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INTERNET

There are different internet or web browsers to browse the internet. Some of the most popular ones are: Internet Explorer, Netscape Navigator, Opera and Firefox, Nescape Navigator.   FEATURES IN A BROWER WINDOW IE has many different Parts, most of which you know e.g The Title bar, Status Bar, Menu Bar and standard tool bar;

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KEYS ON KEYBOARD

 KEYS ON KEYBOARD A keyboard is an input device that resemble a typewriter, which is used to type text, numbers, symbols, commands and to give instructions to the computer. Alphanumeric keys: These are used to type letters and numbers, the letters A – Z, a – z and the digital 0 – 9. Punctuation Keys:

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Logic Gate

These are gates that are formed from combination of two logic gates. There are two types of alternative logic gate: NAND GATE A NAND gate is the combination of an AND gate and NOT gate. It operates the same as an AND gate but the output will be opposite. Remember, the NOT gate does not

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MISUSE OF COMPUTER

AREAS OF COMPUTER MISUSE There are however many areas where computer has been used for wrong or negative things. These are including: Piracy Computer software is written by computer programmers for sale. However, a lot of users simply get copies of software from friends and colleagues for use on their system without paying for it.

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BASIC PROGRAMMING

BASIC has a number of built in functions that greatly extend its capability. These functions perform such varied task as taking the square root of a number, counting the number of characters in a string, and capitalizing letters. Functions associate with one or more values, called input, a single value called output.   NUMERIC FUNCTIONS:

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Memory Unit

 Memory is the part of the computer that holds data and instructions for processing. It stores program and instructions or data for only as long as the program they pertain to is in operation.   TYPES OF MEMORY a.    Primary Memory b.   Secondary Memory   (a) PRIMARY MEMORY This is the memory that can be

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Computer Monitor

The monitor shows on its screen what is typed into the computer. It also shows what is stored in the computer when needed. The monitor looks like a television set. It is also called the visual display unit (VDU). There are two types of monitor: The monochrome monitor: A monochrome monitor shows black and white

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ART OF INFORMATION PROCESSING – COMPREHENSIVE EXPLANATION

ART OF INFORMATION PROCESSING – CPMPREHENSIVE Art of Information processing can be defined as a series of actions or operations that convert data into useful information. It is the act of gathering, manipulating, storing, retrieval and classifying recorded information. Art of information processing is the acquisition, recording, organisation, retrieval, display and dissemination of information. Data

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Computer Input Devices

Sections of the Keyboard The Keyboard is divided into five sections; I.            Alphanumeric keys( Alphabet and Numbers): consist of alphabet (a-z) and numbers (0-9) II.            Function keys F1-f12: they are twelve in number f1-F12 and are located horizontally on the first row of the enhanced keyboards. On standard keyboard they are labeled F1-F10 III.            Control

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Disk Drive

Storage devices are parts of the computer system in which we store information. The two kinds of storage devices are the Main memory storage devices, and Backing storage devices. The main memory storage devices a) Random Access Memory (RAM) RAM stores data, programming languages band applications software only. This storage is only for some time.

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COMPUTER ETHICS

Computers functions best when used in the right environment. The right environment can be refers to as the computer room/laboratory. Computer room is a room specially created for keeping computers and other peripheral devices. COMPUTER ROOM REQUIREMENT Computer system Furniture Tiles Electricity source Stabilizer Air conditioners/fans Mouse and mouse pad Uninterruptible Power Supply(UPS). Printer Speaker

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COMPUTER AND THE SOCIETY

Computer and computer applications are used in various aspects of human activity. In fact, most professions have application software written specifically for them to solve certain tasks. Architects have the AUTOCAD software that aid in the design of building and other structures. SMALL SCALE APPLICATION OF COMPUTER IN THE SOCIETY Digital Wrist watches replacing clock. Word Processing replacing

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Computer Hardware and Software

Definition of Computer hardware This refers to the physical units or components which make up the computer configuration. The term hardware refers to the tangible parts of a computer that can be seen and touched. Examples of hardware components Monitor Motherboard CPU( Central Processing Unit) RAM( Random Access Memory) Expansion Cards Power Supply Optical Disk

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INFORMATION

MEANING OF INFORMATION Information is stimuli that have meaning in some context for its receiver. When information is entered into and stored in a computer, it is generally referred to as data. After processing (such as formatting and printing), output data can again be perceived as information   TYPES OF INFORMATION Oral information Written information

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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 can also be described as a series of actions or operations that convert or manipulate data into useful information. Data processing involves the systematic recording,

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APPLICATION SOFTWARE – Full Explanation

Application Software These refer to the program used to solve a particular type of problem or variety of similar problems. Mostly, application programs are produced by an organisation for its specific tasks. Types of application software There are two major types of application software. These are: Users’ Application Program Application Package Users’ Application Programs: These

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