What is Information Technology (IT)?
Information Technology is the study of data and how it is processed. It also involves managing computer systems, especially in businesses.
How is Information Technology used in business?
In business, IT provides:
Information
Tools to improve productivity
Business process automation
Ways to connect with customers
What is a computer?
A computer is an electronic device that accepts input, processes it, produces output, and stores data for future use.
What is meant by “describe the computer” in terms of hardware?
The computer refers to the chip or processor inside the system.
Other names include:
Processor
Computer chip
Processor chip
What is a computer system?
A computer system is a combination of hardware, software, and the user who operates it.
It usually includes a monitor, keyboard, mouse, and system unit.
What are the major hardware components of a computer system?
Input Devices
Central Processing Unit (CPU)
Primary Memory (RAM and ROM)
Output Devices
Secondary Storage Devices
What is the IPOS cycle?
The IPOS cycle stands for:
Input → Data is entered
Processing → Data is worked on by the CPU
Output → Information is produced
Storage → Data and information are saved
What is the function of input devices?
Input devices get data, instructions, or commands into a computer for processing.
Examples: Keyboard, mouse, touch screen, joystick, scanner, biometric system.
What are computerized devices?
Devices that contain a computer chip.
Examples:
Microwave, A/C, Smartphone, Smart fridge, Smart watch, Cellphone, Security camera, Sensor.
What is the Central Processing Unit (CPU)?
The CPU is the brain of the computer. It controls how the computer works.
What is a Arithmetic Logic Unit (ALU)?
Performs calculations and logical operations.
What is a Control Unit (CU)?
Directs instructions and data flow.
What are output devices and their functions?
Output devices display or present the results of processing.
Examples of output devices
: Monitor, printer, speakers.
What are storage devices and their functions?
Storage devices permanently save information.
storage devices Examples
Hard drive, flash drive, CD-ROM, floppy disk.
What is the function of memory?
Memory allows the computer to temporarily store data and instructions while it’s being processed.
memory Example
: RAM (Random Access Memory).
What are the two main types of memory?
RAM (Random Access Memory): Temporary memory.
ROM (Read Only Memory): Permanent memory that stores important startup instructions.
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Foundations of hardware and software40
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Computer Health & Safety9
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Computer Ethics and Research2
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Word Processing20
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Types of Computer 1027
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Hardware Components20
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Hardware Components 224
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Input Devices27
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Introduction to excel15
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FORMULAS AND FUNCTIONS of a SPREADSHEET15
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Output Devices25
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Storage19
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Secondary Storage Devices32
