HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 7
COMPUTER FUNDAMENTALS
1. BLOCK DIAGRAM OF DIGITAL COMPUTER WITH FUNCTION OF EACH BLOCK.
2. EXPLAIN ALL INPUT DEVICES OF COMPUTER.
3. WRITE A NOTE ON CPU.
4. EXPLAIN ALL OUTPUT DEVICES OF DIGITAL COMPUTER
5. EXPLAIN ADDRESS BUS ,DATA BUS ,CONTROL BUS
6. EXPLAIN COM , PLOTTER ,IMPACT & NON IMPACT PRINTER
7. EXPLAIN RAM ,ROM, EPROM , EEPROM
8. EXPLAIN SEMICONDUCTOR MEMORIES
9. EXPLAIN PRIMARY AND SECONDARY MEMORY.
HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 6
A/D & D/A CONVERTERS
1. EXPLAIN COUNTER TYPE A/D CONVERTER
2. NEED OF A/D AND D/A CONVERTER
3. EXPLAIN SIMULTANEOUS TYPE A/D WITH DIAGRAM AND TRUTH TABLE
4. EXPLAIN SUCCESSIVE APPROXIMATION TYPE A/D CONVERTER
5. EXPLAIN WORKING OF WEIGHTED TYPE RESISTOR D/A CONVERTOR AND WRITE ITS DISADVANTAGES
6. EXPLAIN WORKING OF R2R LADDER TYPE D/A CONVERTER
7. COMPARE WEIGHTED TYPE AND R2R D/A CONVERTER
8 .EXPLAIN 4 BIT R2R LADDER WITH EXPRESSION FOR O/P VOLTAGE
HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 5
FLIPFLOP COUNTERS REGISTERS
1. EXPLAIN WORKING OF CLOCKED D FLIP FLOP
2. WORKING OF RS FLIP FLOP USING NAND GATES
3. WORKING OF MASTER SLAVE JK FLIP FLOP.
4. EXPLAIN PRESET AND CLEAR IN FLIP FLOP.
5. EXPLAIN T FLIP FLOP.
6. WHAT IS TOGGLING
7. WHAT IS MODULUS OF A COUNTER
8. HOW MANY FLIPFLOP ARE REQUIRED TO CONSTRUCT MOD 8,16,32 COUNTERS
9. WORKING OF 3 BIT SYNCHRONOUS COUNTER
10. WORKING OF MOD 16 ASYNCHRONOUS COUNTER
11. COMPARE SYNCHRONOUS AND ASYNCHRONOUS COUNTERS
12. WORKING OF RING COUNTER
13. EXPLAIN 3 BIT RIPPLE COUNTER
14. EXPLAIN DECADE COUNTER
15. WHAT IS PARALLEL COUNTER
16. EXPLAIN WORKING OF 4 BIT RIGHT SHIFT REGISTER
17. EXPLAIN WORKING OF 4 BIT LEFT SHIFT REGISTER
18. EXPLAIN CONCEPT OF 1 BIT MEMORY CELL .
HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS
CHAPTER 3 LOGIC FAMILIES & IC
1. EXPLAIN TTL NOR GATE
2. EXPLAIN CMOS NOR GATE
3. EXPLAIN OPEN COLLECTOR TTL NAND GATE
4. EXPLAIN TTL NAND GATE
5. EXPLAIN CMOS INVERTER WITH DIAGRAM AND TRUTH TABLE
6. EXPLAIN TSL INVERTER CIRCUIT
7. EXPLAIN TTL INVERTER CIRCUIT
8. EXPLAIN TRI STATE LOGIC WITH DIAGRAM
9. 4 CHARECTERISTICS OF DIGITAL IC
10. COMPARE TTL AND CMOS FAMILY
11. CLASSIFICATION OF LOGIC FAMILIES
12. EXPLAIN POWER DISSIPATION , FAN IN/OUT , NOISE MARGIN
HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS
CHAPTER 2 (LOGIC GATES)
1. STATE AND PROVE DMORGANS THEOREM WITH TRUTH TABLE
2. PROVE USING BOOLEAN LAWS : A + A" B = A + B
3. EXPLAIN ALL BASIC GATES WITH DIAGRAM AND TRUTH TABLE
4. EXPLAIN NAND AND NOR GATES
5. CONSTRUCT ALL BASIC GATES USING NAND GATE
6. WHAT IS UNIVERSAL BUILDING BLOCK
7. COMPARE EXCLUSIVE AND INCLUSIVE OR GATE
8. EXPLAIN 8 BIT CONTROLLED INVERTER USING EXOR GATE
9. EXPLAIN 4 BIT BINARY ADDER AND SUBSTRACTER
10. EXPLAIN HALF ADDER AND FULL ADDER USING LOGIC GATES
11. EXPLAIN 4 BIT PARITY CHECKER .
HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS
CHAPTER 1 NUMBER SYSTEMS
1. EXPLAIN DIFFERENT TYPES OF NUMBER SYSTEMS WITH THEIR RADIX
2. EXPLAIN 1S COMPLIMENT AND 2S COMPLIMENT WITH EXAMPLES
3. EXPLAIN HEXADECIMAL NUMBER SYSTEM.
4. CONVERT (AB9)hex to ( )binary.
5. EXPLAIN SUBSTRACTION USING 1S & 2S COMPLIMENT WITH EXAMPLES.
6. EXPLAIN ASCII ,BCD AND EBCIDIC CODES.
7. EXPLAIN BINARY TO DECIMAL CONVERSION WITH EXAMPLE
8. EXPLAIN VARIOUS CODES IN NUMBER SYSTEM.
9. CONVERT (12)decimal TO BINARY .
10. CONVERT (17)decimal to BCD.
11. EXPLAIN RULES OF BINARY ADDITION AND SUBSTRACTION
12. EXPLAIN DOUBLE DABBLE METHOD
13. EXPLAIN LSB , MSB , BYTE , NIBBLE
HSC 2026 ELECTRONICS 2 BOARD EXAM PAPER
(1A)
1. IN ANY LOGIC FAMILY WHEN SPEED OF OPERATION IS INCREASED THE TOTAL AMOUNT OF POWER DISSIPATED IS ________________________
2. 1:64 DEMULTIPLEXER CAN BE DESIGNED WITH _________ SELECT LINES
3. IN ____________ A/D CONVERTERS FOR HIGH RESOLUTION MANY COMPARATORS ARE NECESSARY
4. TO PRODUCE GRAPHICAL IMAGES ____________ DEVICE IS USED.
(1B)
1. WRITE A SUITABLE EXAMPLE OF HEXADECIMAL TO DECIMAL CONVERSION
2. DEFINE POWER DISSIPATION , FANIN/OUT,NIOSE MARGIN
3. EXPLAIN WORKING OF MASTER SLAVE JK FLIP-FLOP WITH DIAGRAM
(2A)
1.SOLVE (1110)2 - (0101)2
2.DRAW AND EXPLAIN BASIC CIRCUIT OF CMOS INVERTER
3.DRAW CIRUIT DIAGRAM OF 4BIT RIGHT SHIFT REGISTER WITH D FLIPFLOP
(2B)
1.STATE & PROVE DMORGANS THEOREM WITH TRUTH TABLE
2.EXPLAIN 4:1 MULTIPLEXER USING LOGIC GATES
(3A)
1.DRAW AND EXPLAIN BASIC CIRCUIT OF TTL NOR GATE
2.IMPLEMENT F(A,B,C) = M(2,4,5,7) USING MULTIPLEXER
3.EXPLAIN WORKING OF COUNTER TYPE A/D CONVERTER
(3B)
1.EXPLAIN WORKING OF 3BIT SYNC COUNTER WITH DIAGRAM.
2.BLOCK DIAGRAM OF DIGTAL COMPUTER WITH FUNCTION OF EACH BLOCK
(4A)
1. EXPLAIN 1S COMPLIMENT & 2S COMPLIMENT WITH EXAMPLES
2. EXPLAIN NAND AND NOR GATES IN BRIEF
3. WORKING OF CLOCKED RS FLIPFLOP USING NAND GATES
(4B)
1. EXPLAIN 1:4 DEMULTIPLEXER WITH DIAGRAM, TT, 1 APPLICATION
2. EXPLAIN R2R LADDER TYPE D/A CONVERTER.
(5A)
1. EXPLAIN HEXADECIMAL SYSTEM .CONVERT(AB9)16 TO ( )2
2. IMPLEMENT F1 = M(1,3,5,7) , F2 = (2,4,6)
3. EXPLAIN RAM ,EPROM ,EEPROM
(5B)
1. PROVE A + A .B = A + B
2. WHAT IS MODULUS OF A COUNTER
3. HOW TO FLIPFLOPS ARE REQUIRED TO CONSTRUCT MOD 8 ,16 ,32 COUNTER
(OR )
1. EXPLAIN DIFFERENT NUMBER SYSTEMS WITH RADIX
2. EXPLAIN HALF ADDER WITH LOGIC DIAGRAM AND TRUTH TABLE
3. EXPLAIN WORKING OF CLOCKED D FLIP FLOP
4. WHAT IS DECODER EXPLAIN BCD TO DECIMAL DECODER
5. EXPLAIN WEIGHTED REGISTER TYPE D/A CONVERTER
6. WRITE ITS DISADVANTAGES .