CSE 467- Design Problem 1

Design a *threshold detector*.

Your circuit will have four inputs *a*3,*a*2,*a*1,*a*0 and a single output *x*. Output *x *should be high if the binary number represented by the inputs is greater than 4. Write a logic equation for the output and use it to design a circuit using as few gates as you can (use only inverters plus 2 input AND gates and OR gates). Also, show how the function can be implemented using an 8:1 MUX and a single inverter. Use unsigned arithmetic.

Turn in a copy of your design notes and solutions.

Due Wednesday, Jan. 13 in class