47) A small dot or circle printed on top of an IC indicates

48) The number of two input multiplexers required to construct a 210input multiplexer is,

49) The full adder adds the Kth bits of two numbers to the

50) In the following question, match each of the items A, B and C on the left with an approximation item on the right
A. Shift register can be used
B. A multiplexer can be used
C. A decoder can be used
1. for code conversion
2. to generate memory slip to select
3. for parallel to serial conversion
4. as many to one switch
5. for analog to digital conversion

51) Extremely low power dissipation and low cost per gate can be achieved in: