>For example, consider the following number >030514 >...that number is understand to mean ‘add the contents of registers A1 and A4, and store the result in regi

>For example, consider the following number >030514 >...that number is understand to mean ‘add the contents of registers A1 and A4, and store the result in register A5’. The association between this numeric form and its meaning under the ISA is completely arbitrary They are not as arbritary as first glance as they might appear, related functions often cluster together creating families of opcodes. How many instructions in the family, what circuits and hardware components they use, and other optimization factors influence the arrangement of instructions as well which can determine the binary number the opcode uses.