Computer Basics: Components, Advantages, and Uses

Posted by on Mar 8, 2025 in Computers | 0 comments

A computer is an electronic device that processes data to perform various tasks. It takes input, processes it using a set of instructions (software), stores data, and produces output. Computers are used in diverse fields such as education, business, healthcare, and research.

Block Diagram of a Computer

A computer operates using several interconnected components. The block diagram represents the basic structure and functionality of a computer system.

1. Input Unit

It allows users to enter data and instructions.

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C Operators: Logical, Arithmetic, and Bitwise

Posted by on Mar 7, 2025 in Computers | 0 comments

Illustrative Examples of Logical and Arithmetic Operators

Answer:

Logical Operators:

  1. AND (&&): Returns 1 (true) if both operands are non-zero; otherwise, 0 (false).
  2. Example:

int a = 5, b = 3, c = 2;
int result = (a > b) && (b > c); // result is 1 (true)

OR (||): Returns 1 (true) if at least one of the operands is non-zero; otherwise, 0 (false). Example:

int a = 5, b = 0, c = 2;
int result = (a > b) || (b > c); // result is 1 (true)

NOT (!): Returns 1 (true) if the operand is Read More

Operating Systems and Process Management Essentials

Posted by on Mar 6, 2025 in Computers | 0 comments

MODULE 1 – Operating Systems & Process Management

1. List any six functions of an Operating System. (3 Marks)

An Operating System (OS) is responsible for managing hardware and software resources. The six key functions of an OS are:

1. Process Management – Controls process creation, scheduling, execution, and termination. The OS ensures efficient CPU utilization by implementing scheduling policies.

2. Memory Management – Allocates and deallocates memory dynamically, ensuring efficient memory

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Windows Server 2003: Configuration and Features

Posted by on Mar 6, 2025 in Computers | 0 comments

OS: A q-OS

Windows 2003: A-premptiva

  1. A-Web Server.
  2. C-use number.
  3. B – to 4.
  4. B-NTLDR, Boot.ini.
  5. C-reading NTLDR.
  6. A-any OS
  7. C-the two
  8. B-loads the minimum
  9. C-from.

The console: A-interface

  1. the two C-
  2. File system: NTFS A-
  3. B-can be installed.
  4. B-have begun.
  5. C-used domain because.
  6. B-installed the service.
  7. A-stored data.
  8. a forest: a collection of B-trees.
  9. A-run DCPROMO.
  10. B-DCPROMO
  11. A-one directory.
  12. C-dependent
  13. B-some features.
  14. DHCP server C-
  15. WINS server B-
  16. DNS server A-
  17. B-one level.
  18. C-two.
  19. C-can.
  20. A-action / connector.
  21. B-idredin-addrarpa.
  22. B
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Future of ICT: Trends and Digital Literacy Skills

Posted by on Mar 6, 2025 in Computers | 0 comments

The Future of ICT: Trends and Developments

What is likely to evolve in ICT? This summarizes the key aspects of this likely evolution. Based on current trends, developments in ICT in the coming years may be characterized by the following:

  • Progressive increase of portable computer systems.
  • Progressive spread of flat-panel displays (TFT).
  • Implementation of the omnipresence of wireless technology.
  • Widespread use of systems for broadband internet connections.
  • Mobile UMTS third generation, with image and graphic
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Intel 8255 Parallel Port Interface: Modes & Features

Posted by on Mar 6, 2025 in Computers | 0 comments

Intel 8255 Parallel Port Interface Device

The Intel 8255 is a general-purpose, programmable I/O device with 40 terminals. It features 24 I/O pins that can be individually programmed in two groups of 12 and has three modes of operation. It contains three programmable 8-bit parallel ports (A, B, and C). Each port has a corresponding register, and there is a control register for the port.

Formatting the Control Word

The control word is used to program the two groups of interface ports on the 8255. The

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