CSCI 1006 Lecture Notes - Lecture 5: Magnetic Monopole, Bit, Magnetic Storage
21 Sep 2016
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Document Summary
Every piece of data must be translated to a series of 1s and 0s called binary code. A single 1 or 0 is called a bit (b) and it is the smallest unit possible. Kilobits per second (kbps) are most common. A byte used to be 4 bits in the 70s. Bits are represented in magnetic charges, electric charges, and physical peaks&valleys. Storage- provides a reliable space to hold data that is everything on your computer. Represents bits as positive and negative magnetic charge. The data reader doesn"t have to touch the disk. Ex) hard drive, floppy disk, ipod classic. This is the cheapest form of storage. Uses lasers to read and write data. Lasers will burn/read the surface of a disk with peaks and valleys. Bits are represented by physical holes on the surface. This is the second cheapest form of storage, mainly used for distribution. Ex) flash drive, memory stick, sd card,, ssd, new ipods.
