Digital Arithmetic Operations and Circuits Questions

• Binary numbers can be added together in a basic parallel-adder circuit when ________.
• When decimal numbers with several digits are to be added together using BCD adders ________.
• The two's complement of 00001111 is ________.
• A four-bit adder can perform ________.
• The binary subtraction 1 – 1 = ________.
• If [A] = 10 and [B] = 01, then [A] [b] = ________.
• The binary addition of 1 + 1 = ________.
• FC48 – AB91 = ________.
• When subtracting 6 from 9 using 2's-complement methods, the ________ is 2's complemented before the addition.
• Packages are used to contain ________ and other information that must be available to all entities in the design file.
• Negation is performed by simply performing the ________ operation.
• Subtraction of the 2's-complement system actually involves the operation of ________.
• In VHDL, the architecture declaration always begins with the ________ of variable signals or components that will be used in the concurrent description between BEGIN and END.