Autor: Codenga 06.02.2024

In today's world, where we use smartphones, browse websites, watch 4K resolution videos, and store our data in terabytes on hard drives, the importance of units and measures cannot be overstated. It's valuable to understand how to interpret them and their practical applications in the field of computer science.

Hard Drive

• Byte (B) is the fundamental memory unit in a computer. It can represent a single character or number.
• Kilobyte (KB) is 1024 bytes (a thousand bytes in computing is 1024 bytes). It can be used to specify file sizes.
• Megabyte (MB) is a million bytes or a thousand kilobytes. Often used to indicate the capacity of hard drives, RAM, or file sizes.
• Gigabyte (GB) is a billion bytes or a thousand megabytes. Commonly used when specifying the capacity of hard drives and mass storage.
• Terabyte (TB) is a trillion bytes or a thousand gigabytes. Used in the case of large data warehouses and servers.

Processor

• Hertz (Hz) is the unit of frequency, measuring the number of clock cycles per second. In the context of a processor, it indicates how many computational operations it can perform in one second.
• Megahertz (MHz) is a million hertz. It specifies the processor's performance in millions of cycles per second.
• Gigahertz (GHz) is a billion hertz. Processors with gigahertz clock speeds are currently standard in personal computers.

Network Link Speed

• Bit per second (bps) indicates how many bits of data are transmitted in one second. It is the basic unit of transmission speed.
• Kilobit per second (Kbps) is a thousand bits per second. Used to describe internet connection speeds.
• Megabit per second (Mbps) is a million bits per second. The standard speed for broadband connections.

Images

Pixel (px) is the smallest element of an image on a screen. Images, photos, and computer screen resolution are measured in pixels. If we say an image has a size of 400x600, it means it has a width of 400 pixels and a height of 600 pixels. The term "Mega" is often added before pixels, meaning a million. The size of a camera sensor is often given in Megapixels (Mpix or Mpx in short).

The above compilation should provide you with a good understanding of the basic units of measure used in computer science.