Question

12. The analog telephone line has maximum frequency 4 KHz. Analog telephone signal converted to digital. Which sampling frequency (sampling rate ) Analog - to- Digital (AD) converter must have ? At least KHz 13. Which of the following computer architecture is "IBM-compatible PC“? a) x86-64 b) Apple c) ARMv7 d) ARMv8 14. Ir Computer manual describes CPU as: "Intel Core i7, 3.4 GHz". then 3.4 GHz is a) CPU Clock frequency b) Memory bus frequency e) Frequency of the bus which connects CPU to chipset d) Graphic controller frequency 15. NOR gate has 2 inputs (A, B) and output C. If A-B-1, then C-

Answer 1

12) At least 8KHz

According to Nyquist–Shannon sampling theorem, only if the sampling rate is higher than twice the highest frequency of the signal, the reproduction would be possible.

13) (a) x86-64 computer architecture is IBM Compatible PC.

Apple is not a computer architecture.

ARMv7 and ARMv8 are not counted in IBM compatible PCs.

14) (a) CPU Clock Frequency. Intel Core i7 is the processor and 3.4GHz is its clock frequency or clock time.

Memory bus frequency or the frequency of the bus which connects CPU to the chipset is same as Front Side Bus. The value of this bus ranges in MHz and is not the actual speed of CPU.

As Intel Core i7 is a CPU, the speed mentioned cannot be of a GPU. These are also generally in MHz.

15) If A=B=1, then output C for NOR gate would be 0. This is because, the OR of A=1 and B=1 would give 1 which when negated would give 0.