Through layer upon layer upon layer upon layer ... so on and so on ... of abstraction.
I'll do my best to give some layers.
At one of the lowest levels is electrical components such as resistors capacitors etc.
Put a couple of them together and you create a circuit, throw in some logic gates (AND, OR, XOR etc) and you have some logic handling.
If you arrange this logic gates into some basic configurations you can make circuits capable of math, memory addressing and other advanced tasks.
Put all these peices together with some more advanced connections (Buses etc) and you get a CPU. (You can repeat for other peices for hardware too)
. This CPU is capable of executing some basic instructions called Machine Language, this is basically some numbers that stand for certain memory positions and calculations and logic jumps.
Then to make things easier for people the Assembly language was invented, this assigned some simple words to those machine code numbers and added some automated help (registers etc).
Next comes some basic system calls. Assembly code written that controls your hardware.
Those system calls combined with some other nicities such as memory management, and you get the operating system (OS). (Windows is essentially just this with some pretty windows ... hence the name)
Although assembly is already a step up its still not enough. Eventually other programming languages were invented to make programming easier. Those languages take the code and translate it into machine code.
Using these programming languages programmers can create the programs you use.
Obviously this isn't 100% complete, I missed libraries and device drivers and all that lovely stuff, but the above should give you the general idea of how computers are really just layers and layers of things built one on top of the other to what you use to get your answers.
Coded information: a computer readable document. NCI-documents is non coded information: only human readable. NCI >> OCR >> CI
what are stored in a format that only a computer can process, also called machine readable records
Human readable can only be understood by human beings where as Machine readable is in Binary format and could only be understoood by machines. (eg. computers) The only way to understand machine readable is if the data is processed and output into human readable form by means of an output device :)
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BIOS chip
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human-readable form.
Code that is written in readable English as opposed to being written in a specific computer language is Pseudo Code.
Encryption
Computers use machine language, which are coded instructions in binary.
Computer data is made up of tiny magnetic alterations which form a readable track of 1 and 0 bits. The technology has progressed to such a stage that billions of billions of these bits can fit into a space the size of a shoe.
The two are very similar and overlap each other. The difference is that while information is data, data is not necessarily information. Data may be hidden or be in a machine-readable format while information is generally exposed and in a human-readable format.
Soft copy is a digital version of information which can be viewed on a computer screen, that is it is a computer file such as a pdf. Hard copy is the printed version when output via a printer onto a physical 'human readable' medium such as paper.