SS 1 Computer Studies

Sections of the Keyboard The keyboard is categorized into five sections: Alphanumeric keys (Alphabet and Numbers): Comprising alphabet (a-z) and numbers (0-9). Function keys F1-F12: There are twelve function keys (F1-F12) located horizontally on the first row of enhanced keyboards. On standard keyboards, they are labelled F1-F10. III. Control keys – Del, Ctrl, Esc, and […]

Meaning of data: Data refers to raw facts or entities to which no meaning has been attached because they have not been processed. It can include facts about people, places, things, and their activities. When data undergoes manipulation to organize and derive meaning, the outcome is referred to as information.   Types of data: Data

Output Devices and Types A computer output device is responsible for releasing processed data from the computer to either the user or storage devices. These devices produce data in various forms, such as audio, visual, and hard copy. They are peripheral devices connected to a computer via cables or a wireless network.   Types of

Keyboard Sections: Alphanumeric Keys (Alphabet and Numbers): Comprising letters (a-z) and numbers (0-9). Function Keys F1-F12: Twelve keys, F1-F12, situated horizontally on the first row of enhanced keyboards, or labeled F1-F10 on standard keyboards. III. Control Keys – Del, Ctrl, Esc, and Alt: Used in conjunction with other keys to execute specific tasks. Cursor-Control and

An input device is a piece of computer hardware that is used to send data into the main storage of a computer for processing. Input devices can be classified based on the modality of input (such as mechanical motion, audio, visual, etc.) and whether the input is discrete (e.g., keyboard) or continuous (e.g., mouse’s position).

Historical Development of Computing Devices 2: From Pre-Computer Age to the 19th Century Jacquard’s Loom: Features, Components, and Applications Invented by Joseph Marie Jacquard in 1801, the Jacquard loom revolutionized textile manufacturing, particularly for intricate patterns like brocade and damask. Utilizing punched cards with holes corresponding to design rows, this mechanical loom simplified the production

Development Of Computing Devices Through History The origins of computing devices trace back to ancient times when our ancestors utilized primitive methods for counting. Initially, counting was performed using fingers and toes, and when this proved insufficient, early humans introduced pebbles (stones) as a means of tallying their possessions, such as flocks.   Before the

Computer hardware refers to the physical components that constitute a computer system. It encompasses tangible elements that are visible and can be touched. The following is an overview of various hardware components:   Examples of hardware components: Monitor Motherboard CPU (Central Processing Unit) RAM (Random Access Memory) Expansion Cards Power Supply Optical Disk Drive Hard

A computer, a remarkable multi-purpose electronic device, serves as a sophisticated machine capable of receiving instructions in the form of data, processing them with incredible speed, and delivering accurate results. Beyond its seamless execution of tasks, a computer functions as a complex system, comprising two fundamental components: hardware and software.   The hardware of a

Logic Equations In addition to portraying the operations of a logic gate through truth tables and grammatical definitions, logic equations serve as a means to represent not only logic gates and circuits but also, employ theorems and equivalences, to streamline equations by reducing the number of terms. In the realm of logic equations, each Boolean

Digital Circuit Elements: Logic Gates A fundamental component of digital circuits, a logic gate serves as a foundational building block. Typically featuring two inputs and one output, each terminal exists in a binary state—either low (0) or high (1) at any given moment. The state of a terminal, and consequently the logic gate, may frequently

Primary Storage Devices: Temporary in nature. Expensive. Faster but more costly. Lower storage capacity. Examples include RAM, ROM, etc.   Secondary Storage Devices Permanent in nature. Cheaper. Slower but more affordable. Higher storage capacity. Examples include FDD (Floppy Disk Drive), HDD (Hard Disk Drive), etc.   Data Representation: (a) BIT (Binary Digit): The smallest unit

Secondary Memory Secondary memory, also known as storage, refers to non-volatile memory external to the computer. It is employed for storing large amounts of data, for permanent or long-term storage of data or programs, and for creating backups.   Secondary storage media can be categorized based on the following criteria: (i) Retrieval speed: The time

Memory in a computer serves as the repository for both data and instructions used in processing. It retains programs and instructions or data only for the duration of the program’s operation.   Types of Memory Primary Memory This type of memory is directly accessible by the CPU, engaging in constant interaction. It retrieves stored data,

The primary function of the CPU is to execute mathematical calculations on binary numbers, but it also serves other purposes. The CPU encompasses various hardware components such as the motherboard and circuits.   Within a computer, the central processing unit (CPU) is the hardware responsible for executing the instructions of a computer program. It performs