data units in computer systems

//*********컴퓨터는 0과 1만의 형태를 이해한다[전기적 신호 0->off 1->on]**********//

📅 bit: 2진수 binary로 0 or 1의 값을 가짐

📅 nibble: made up of 4 bits => 16 possible binary values, 0000 to 1111

📅 byte: made up of 8 bits => 256 possible binary values, 컴퓨터가 일반적으로 사용하는 단위

📅 kilobyte: 1024 bytes => roughly one full A4 page of text

📅 megabyte: 1024 kilobytes => mp3 music file is around 4MB

📅 gigabyte: 1024 megabytes => DVD can store around 4.7GB

📅 terabyte: 1024 gigabytes => hard drive

 

 

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?Why does data need to be converted into a binary format to be processed by a computer?
Computers can only process and store binary numbers. This means that numbers and text, data from sensors and all analogue sounds, images and video etc. has to be converted into binary (digitised) before it can be processed by a computer.