Khyber PakhtunKhwa Board of Technical Education Peshawar
Diploma of Associate Engineer
2nd Year Bio – Medical Technology New Course
Annual Examination 2012
Paper: - Digital Electronics (BM – 222)
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Time Allowed: - 03 Hours. Max. Marks: - 50
Note: - Attempt any five questions. All questions carry equal marks.
Q.1: - Write the definitions of Ist and 2nd De-Morgan’s Theorems what are their equations.
Q.2: - Explain AND and OR gate in detail, also draw their Truth Table for 3-inputs and also give
result.
Q.3:- Draw Full adder circuit and give output of the circuit.
Q.4: - Enlist types of memories and differentiate between ROM and RAM.
Q.5: - Define Asynchronous counter. Explain full subtractor in detail.
Q.6: - Explain A/D and D/A circuits in detail.
Q.7: - Differentiate between up and down counter. Explain BCD method.
Q.8: - Draw circuit for
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