Digital Arithmetic Operations and Circuits Questions

• If B[7..0] = 10100101, what is the value of B[6..2]?
• The BCD addition of 910 and 710 will give initial code groups of 1001 + 0111. Addition of these groups generates a carry to the next higher position. The correct solution to this problem would be to:
• If [A] = 1011 1010, [B] = 0011 0110, and [C] = [A] • [B], what is [C 4..2] in decimal?
• The range of positive numbers when using an eight-bit two's-complement system is:
• Determine the two's-complement of each binary number. 00110 00011 11101
• The carry propagation delay in 4-bit full-adder circuits:
• Which of the following is correct for full adders?
• Convert each of the decimal numbers to 8-bit two's-complement form and then perform subtraction by taking the two's-complement and adding.
• Add the following hex numbers: 011016 + 1001016
• The binary subtraction 0 – 0 =
• How many inputs must a full-adder have?
• The summing outputs of a half- or full-adder are designated by which Greek symbol?
• What is one disadvantage of the ripple-carry adder?
• When 1100010 is divided by 0101, what is the decimal remainder?
• It is not necessary to have the same number of bits when adding or subtracting signed binary numbers in the 2's-complement system.
• The binary subtraction 0 – 1 = is difference = 1 borrow = 0
• The look-ahead-carry adder is slower than the ripple-carry adder because it requires additional logic circuits.
• There are four possible combinations for subtracting two binary numbers.
• The 74LS382 ALU is a 24-pin arithmetic/logic unit.
• Overflow indicators in ALU circuits indicate when add or subtract operations produce results that are too large to fit into four bits.