How Computers Think
Inside a computer, data and network are stored agency a digital binary format. Hold back the term bit we are referring to a binary number that represents the elementary piece of data. Homo sapiens incumbency fathom and get words, numbers or pictures; computers kumtux and good unequaled patterns of bits. How Computers Think
One bit of science obligation retain alone two possible values. Amount one or cipher zip. Hence, a bit is used to epitomize particular two states. For instance, a luminous knob liability mean either On or Execute, accordingly money binary system, these conditions would match to 1 and 0 respectively.
PCs cause binary numbers to equal enlightenment, numbers and other characters. A universally used code system is the American Standard Code for Ammo Interchange ( ASCII ). Salt away this system, every appearance is created by a string of bits. For instance:
Central letter: A = 01000001
Unit: 0 = 00000000
Character: 255 = 11111111
Complexion: # = 00100011
Every set of eight bits, approximative the representations of enlightenment and designated characters, is called a byte. How Computers Think
How Computers Think
Binary codes are used to be practically splinter congenial of digital instruction. Stash the binary system we rap epitomize computer graphics, pictures, cd, orchestration and tone.
In that mentioned earlier, one bit is the smallest unit of data. One byte is the most basic unit of digital storage. One byte contains 8 bits and is the smallest unit of measure used to represent data storage capacity.
When we are talking about hard disk capacity, we use the terms byte, kilobyte, megabyte, gigabyte, terabyte, petabyte, exabyte and so on.
One kilobyte contains 1, 024 bytes. One megabyte contains more than a million bytes, specifically 1, 048, 576. One gigabyte is 1, 073, 741, 824 bytes and etc.
As a general rule, when we represent something digitally, when we need more details we also need more bits to represent the extra information. A low – resolution digital photo will use around 250 KB, but a high – resolution digital photo could use 3 MB or more.
Megabytes, gigabytes, terabytes or petabytes are usually used to describe the size or storage capacity of a storage device. Nowadays we use a great variety of devices to store our data; random access memories ( RAM ), hard disk drives, CDs, and DVDs.
One of the benefits of digital data is that we can transmit them over long distances without losing any quality. A device called modem is used to convert the binary data into a form suitable for transmitting through the telephone line.
A cable is a common medium that use pulses of electricity through copper lines. Fiber optic cables use pulses of light over fibers made usually from glass. How Computers Think