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Digital Electronics Questions
2's complement representation: What decimal number is represented by the binary string 11100101 in 8-bit 2's complement form?
1's complement operation: What is the 1's complement of the binary number 11100110?
Combinational circuit design: A full adder circuit can be implemented using which combination of half adders and/or logic gates?
In digital electronics, which device has a single data input line and routes that signal to one of many outputs (i.e., one input and many outputs)?
In an 8-bit two's-complement system, what is the largest-magnitude negative number (i.e., the minimum representable value) that can be stored?
For three variables A, B, C, write the canonical Sum-of-Minterms for Y = Σ m (1, 3, 5, 7). Which expression is correct?
A 5-stage ring counter (one-hot) is built using 5 flip-flops connected in a ring. How many unique states does it cycle through?
An n-bit DAC has a full-scale (reference) of 5 V and a resolution (LSB size) of 5 mV. What is the value of n?
A 2-input AND gate has inputs A and B, plus an active-high inhibit (S). For which input combination is the output logic-1?
In digital logic, what are the outputs produced by a half-adder circuit?
A ripple counter is built from JK flip-flops with propagation delay t_pd = 12 ns, and is clocked at 10 MHz. What is the largest modulus (2^N) that can safely operate at this frequency?
For three variables A, B, C, which maxterm index corresponds to the expression A + B + C in canonical Product-of-Maxterms form?
Boolean algebra practice: For the Boolean expression A + B·C (with variables A, B, C), how many distinct minterms (input combinations) satisfy the expression?
Computer arithmetic design: Why is a carry look-ahead adder commonly preferred for binary addition in high-speed digital systems?
Counters and decade operation: A BCD (decade) counter counts 0–9 and then resets. Which binary state range does it skip during counting?
Minimum number of 2-input NAND gates required to implement the function F = (x + y) (Z + W) is
Core memory element in digital electronics: Which component is the fundamental storage element used to store a single bit?
Counter-type ADC timing: A counter-type A/D converter uses a 4-bit counter with a 2 MHz clock. What is the worst-case conversion time?
Radix conversions: Convert the decimal number 43 to (i) hexadecimal and (ii) Binary-Coded Decimal (BCD).
Binary fundamentals: What is the 4-bit binary representation of decimal number 10?
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