I want to design 8 bit micro controller for my basic understanding(paper work) i know microcontroller is made mainly with cpu , mememory and peripheral so I have start to make cpu
cpu is made with alu and control unit
alu is use to perform arithmetic function and logic function
so i use AND OR NOR NAND NOR IC to create logic function
and to create arithmetic function I use adder subtractor
and for control unit I use multiplexer decoder and counter
now I can make cpu with this ICs But i don't understand how many bit are requrie to make alu conrol unit. suppose I want to make 8 bit microcontroller then how many bit are require to make cpu and same things for cpu I want make alu for 8 bit cpu then how i decide how many bit are require to make alu
cpu is made with alu and control unit
alu is use to perform arithmetic function and logic function
so i use AND OR NOR NAND NOR IC to create logic function
and to create arithmetic function I use adder subtractor
and for control unit I use multiplexer decoder and counter
now I can make cpu with this ICs But i don't understand how many bit are requrie to make alu conrol unit. suppose I want to make 8 bit microcontroller then how many bit are require to make cpu and same things for cpu I want make alu for 8 bit cpu then how i decide how many bit are require to make alu