TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) A half-adder has no carry-in bit. 1) 2) A group of four bits is called a byte. 2) 3) Adders with greater bit capacities can be constructed by connecting 2-bit adders in parallel. 3) 4) Full-adders do not provide for a carry input or a carry output. 4) 5) A BCD-to-decimal decoder can be classified as a 4-line to 10-line decoder. 5) 6) A BCD-to-7-segment decoder can be classified as a 10-line to 7-line decoder. 6) 7) Converting a decimal number into a binary number is an example of an encoder. 7) 8) A multiplexer has multiple inputs and a single output. 8) 9) A demux basically reverses the function of a mux. 9) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 10) What is the major difference between half-adders and full-adders? 10) A) Nothing basically, full-adders are made up of two half-adders. B) Full-adders can handle double digit numbers. C) Full-adders have a carry input capability. D) Half-adders can only handle single digit numbers. 11) 11) Which of the following is correct for full-adders? A) Full-adders have the capability of directly adding decimal numbers. B) Full-adders are used to make half-adders. Full-adders are limited to two inputs, since there are only two binary digits. D) In a parallel full-adder, the first stage may be a half-adder. 12) 12) What is one disadvantage of the ripple-carry adder? A) The interconnections are more complex. B) More stages are required to a full-adder. It is slow, due to propagation time. D) All of the above are correct. 13) 13) Which statement below best describes the function of a decoder? A) A decoder will convert a decimal number into the proper binary equivalent. B) A decoder will convert a binary number into a specific output representing a particular character or digit. C) Decoders are used to prevent improper operation of digital systems. D) Decoders are special ICs that are used to make it possible for one brand of computer to talk to another. 14) The circuit below can be used as a(n) 14) А0 ВО A1 B1 A2 Х B2 A3 B3 A) 8-bit comparator C) 4-bit half-adder B) 4-bit comparator D) dual 4-line multiplexer 15) A multiplexer with four select, or address, lines can select one of A) 3 C) 15 B) 7 inputs. D) 16 15)