Computer knowledge

𝙒𝑯𝘼𝑻 𝑰𝙎 𝘾𝑶𝙈𝑷𝙐𝑻𝙀𝑹: A computer is a programmable electronic device designed to accept raw data, process it according to a set of instructions (software), and produce a useful result (output).Modern computers are versatile tools that can store, retrieve, and manipulate information such as text, numbers, images, and video at incredible speeds.Core ComponentsEvery computer system relies on the interaction between two main categories:

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This image categorizes computer storage into *three main types*:
𝐏𝐑𝐈𝐌𝐀𝐑𝐘 𝐌𝐄𝐌𝐎𝐑𝐘
𝐑𝐀𝐌
- Volatile memory; stores data currently in use by the system.
- Data is lost when power is off.
- Fast read/write speeds.
𝐑𝐎𝐌
- Non-volatile memory; contains permanent instructions (e.g., BIOS).
Cannot be modified easily.
𝐂𝐀𝐂𝐇𝐄
- Very fast, small memory located inside or close to the CPU.
- Temporarily stores frequently used data for quick access.
*2. 𝐒𝐄𝐂𝐎𝐍𝐃𝐑𝐘 𝐌𝐄𝐌𝐎𝐑𝐘 (Permanent, user-accessible storage):

𝐇𝐃𝐃 (Hard Disk Drive)*:
- Magnetic storage, slower than SSDs but cheaper.
- Used for storing large amounts of data.

𝐒𝐒𝐃 (Solid State Drive)*:
- Faster than HDDs, no moving parts.
- Used for OS, software, and quick access data.

𝐂𝐃/𝐃𝐕𝐃 (Compact Disc / Digital Versatile Disc)*:
- Optical storage used for media, backups, etc.
- Becoming less common.
𝐔𝐒𝐁 𝐅𝐋𝐀𝐒𝐇 𝐃𝐑𝐈𝐕𝐄
- Portable, rewritable storage device.
- Useful for transferring files between systems.
*3. Tertiary/ Cloud Storage* (Backup, long-term, or remote storage):
𝐂𝐋𝐎𝐔𝐃 𝐒𝐓𝐎𝐑𝐀𝐆𝐄
- Online storage (e.g., Google Drive, Dropbox).

𝗪𝗛𝗔𝗧 𝗜𝗦 𝗦𝗢𝗙𝗧𝗪𝗔𝗥𝗘?
Software is a set of instructions, data, or programs that tell a computer what to do and how to perform specific tasks, unlike its physical counterpart, hardware. It is the intangible part of a computer system that includes applications like word processors and games, as well as the system software that manages the computer's hardware.

Motherboard:
The main circuit board that connects all other components.
CPU (Central Processing Unit): The "brain" that processes instructions and runs the operating system and applications.

RAM (Random Access Memory):
Short-term memory that the CPU uses to quickly access data.
Storage Device: Long-term storage for data, such as a Hard Disk Drive (HDD) or Solid State Drive (SSD).
Power Supply Unit (PSU): Converts wall power into the correct voltage for the computer's components.
GPU (Graphics Processing Unit): Handles all graphics and video output, also known as a video card.

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