How We Measure Memory. At the Bottom of things A piece of digital information is always stored as a sequence of binary states. What’s that mean you ask???

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Presentation transcript:

How We Measure Memory

At the Bottom of things A piece of digital information is always stored as a sequence of binary states. What’s that mean you ask???

A microscopic view of a CD

Electrical Memory RAM, Memory Sticks, Memory Cards all store information as sequences of negative or neutral charges. The two states are negative and Neutral

A “bit” A bit of information is a single binary state. For example: “on” or “off” “pit” or “land” “negative” or “neutral”

“A Byte” There are 8 bits in a byte. A byte can hold a single character. Ex: ‘A’

A “Kilobyte” (Kb) A Kilobyte is 1024 bytes or (or about 1000 bytes) You would measure an in Kb.

A Megabyte Mb A megabyte is bytes which is (Or about 1 million Bytes) Mp3s and digital pictures are usually 2-5 Mbs.

Gigabytes (Gb) A Gigabyte is bytes or 2 10 or about 1 billion bytes. We measure RAM, Hard drives, Memory cards in Gb.

Summary 1.A bit is a single binary state. 2.There are 8 bits in a byte 3.There are about bytes in a Kilobyte. 4.There are about Kilobytes in a Megabyte 5.There are about Megabytes in a Gigabyte 6.There are about Gigabytes in a Terabyte