3. The fixed count that should be used so that the output register will represent the input for a 6 bit dual slope A/D converter uses a reference of -6v and a 1 MHz clock. It uses a fixed count of 40 (101000).
In look ahead carry adder the carry is directly derived from the gates when original inputs are being added. Hence the addition is fast. This process requires more gates and is costly.
= 8.333 say 8
is made to be unity, the O/P count N2 = ei, N1 = 6 = 000110.
1000 = 5 or N = 10.
minimum no. of 2 input NAND gate.