Digital Logic MCQ for Bihar STET with Answers, PYQs & Notes

Tests in this unit

• Mock TestThe 30-question Unit 1 mock paper from the notes, in book order.30 Q
• PYQ OnlyQuestions asked in the 2023, 2024 and 2025 STET papers, with corrected options.33 Q
• Practice BankTopic-wise questions: number systems, codes, gates, K-maps, circuits, flip-flops, ADC/DAC.76 Q
• Full TestPYQs and the practice bank together.109 Q
• Quick Test30 questions picked at random.30 Q

Unit 1 syllabus: Digital Logic

1. Data and number systems; binary, octal and hexadecimal representation and their conversions; BCD, ASCII, EBCDIC, Gray codes and their conversions; signed binary number representation with 1's and 2's complement methods; binary arithmetic. Venn diagram, Boolean algebra; various logic gates, their truth tables and circuits; representation in SOP and POS forms; minimization of logic expressions by algebraic method and K-map method.
2. Combinational circuits: adder and subtractor circuits; applications and circuits of encoder, decoder, comparator, multiplexer, de-multiplexer and parity generator. Memory systems: RAM, ROM, EPROM, EEROM; design of combinational circuits using ROM; programmable logic devices and gate arrays (PLAs and PLDs).
3. Sequential circuits: basic memory element; S-R, J-K, D and T flip flops; various types of registers and counters and their design; irregular counter; state table and state transition diagram; sequential circuit design methodology.
4. Different types of A/D and D/A conversion techniques. Logic families TTL, ECL, MOS and CMOS, their operation and specifications.