Machine code also contains instructions for loading and saving values from memory (into or out of registers), jumping to a certain line in the program (that is either before or after the current line), or to jump to the line only if a certain condition is met (by doing a specified comparisons on values in registers). The output is put into a register, where it can either be retrieved or used in further arithmetic.Īll computers have a machine code language (commonly referred to as an instruction set) that is used to tell the computer to put values into registers, to carry out arithmetic with the values in certain registers and put the result into another specified register like what we talked about above. Once in registers, they can be added, subtracted, multiplied, divided, or be checked for equality, greater than, or less than. Registers can be set to values, or data from memory can be put into registers. These circuits contain transistors laid out in a special way that will give a correct output based on the inputs.ĭata such as numbers (represented using binary) have to be put into storage places called registers while the circuit is processing them. A computer has to carry out instructions on physical circuits.
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