Basically a computer uses what is called machine language. This is represented by 0's and 1's and is very difficult to read/write. So we came up with assembler which is quite readable and pretty easy to program with. Different computer architectures however use different assembler instructions and you generally need some in depth understanding of how the chip in question works. Some are very easy to understand like Atmel AVR. If you are geared more towards a PC the target is generally an x86 chip and they are much messier. As programs grew and as programmers are lazy we found that it takes a loong time to code in Assembler so another layer of abstraction was introduced allowing us to write less code, this has resulted in different programming paradigms where you essentially have access to different programming languages that are better suited towards solving different problems and developing different kinds of programs. We generally refer to languages that are above Assembler in abstraction as "High-level" languages.
If you write a program in a high level language it will be translated ("compiled", "assembled") to Assembler and in the chip it will be machine code. See Related Link below as well.
Those in the instruction set for the design of that Central Processing Unit (CPU)
COMMANDS
What sets of instructions do computers use to process data? - Computer Programs
input
Process,or existing computer instructions that manipulate data, results in useful output?
programmer
sawpping
Data, information, and instructions.
In two basic stages: i) process - the computer needs, and is easily provided with, instructions about what to do with the data, and ii) data - readily accessible information that is accessed, operated upon, and results displayed by the instructions stored in the computer's instruction program.
data
No. Computer process (input) information into (output) data.
input
A programmable computer is one for which instructions on how to perform different tasks (programs) can be written/installed. A non-programmable computer comes with programs already installed and its software can not be readily changed.
A program is a set of detailed instructions that tells the computer how to perform a particular task.