Q21. A digital to analog converter with full scale output voltage of 3.5 V has a resolution close to 138 millivolt. Its bit size is

Q22. Which of the following is not a specification for D to A convertor?

Q23. The minimum number of resistances are required for a 8-bit weighted-resistor type DAC is

Q24. The following circuit can act as a memory

Q25. The basic memory cell of dynamic RAM consists of

Q26. The address bus with a ROM of size 1024 × 8 bits is

Q27.  In binary number system the first bit from left to right is called as

Q28. Decimal 43 in hexadecimal and BCD number system is respectively

Q29. An index register in digital computer is to be used for

Q30. In Digital Circuits the major heat is generated at the