Please could anyone show me how to solve these two questions
Image text transcribed for accessibility: Using the usual "rules-of-thumb" find the current through each resistor in the following NAND TTL circuit if the inputs are all high. Hence demonstrate that the transistors Q1 and Q2 are saturated. You are asked to design a combinational circuit for calculating the (approximate) square root of a positive integer. The input to the circuit is a positive integer in 4-bit binary code. The output is the binary code for the nearest integer to the true root. Design using (i) an SOP approach (ii) a POS approach.