{"id":1506,"date":"2021-04-25T17:13:42","date_gmt":"2021-04-25T11:28:42","guid":{"rendered":"https:\/\/bcisnotes.com\/secondsemester\/?p=1506"},"modified":"2021-04-25T17:13:42","modified_gmt":"2021-04-25T11:28:42","slug":"pokhara-university-fall-2015-digital-systems-bcis","status":"publish","type":"post","link":"https:\/\/bcisnotes.com\/secondsemester\/question-bank\/pokhara-university-fall-2015-digital-systems-bcis\/","title":{"rendered":"Pokhara University || Fall 2015 Digital Systems|| BCIS"},"content":{"rendered":"

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Fall 2015 Digital Systems<\/h3>\n

This is the question set along with the answers of Fall 2015 Digital Systems which was taken by the Pokhara University (PU).<\/p>\n

POKHARA UNIVERSITY(PU)<\/span><\/b>\u00a0<\/span><\/p>\n\n\n\n\n\n\n\n\n
Level:\u00a0 Bachelor<\/span><\/b>\u00a0<\/span><\/td>\nSemester \u2013 Fall<\/span><\/b>\u00a0<\/span><\/td>\nYear: 201<\/span><\/b>5<\/span><\/b>\u00a0<\/span><\/td>\n<\/tr>\n
Program: BCIS<\/span><\/b>\u00a0<\/span><\/td>\nFull Marks: 100<\/span><\/b>\u00a0<\/span><\/td>\n<\/tr>\n
Course: Digital Systems<\/span><\/b>\u00a0<\/span><\/td>\nPass Marks: 45<\/span><\/b>\u00a0<\/span><\/td>\n<\/tr>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Time:3hrs<\/span><\/b>\u00a0<\/span><\/td>\n<\/tr>\n
Candidates are required to give their answers in their own words as far as practicable.<\/span><\/i>\u00a0<\/span><\/td>\n<\/tr>\n
The figures in the margin indicate full marks.<\/span><\/i>\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0<\/span>\u00a0<\/span><\/p>\n

Section \u201cA\u201d<\/span><\/b>\u00a0<\/span><\/p>\n

Very Short Answer Questions<\/span><\/b>\u00a0<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
SN<\/span>\u00a0<\/span><\/td>\nAttempt all the questions.<\/span><\/b>\u00a0<\/span><\/td>\n10\u00d72<\/span><\/b>\u00a0<\/span><\/td>\n<\/tr>\n
1<\/span>\u00a0<\/span><\/td>\nConvert (67)<\/span>10<\/span> to<\/span> Gray<\/span> code.<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
2<\/span>\u00a0<\/span><\/td>\nState de morgan\u2019s theorem.<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
3<\/span>\u00a0<\/span><\/td>\nDesign 3 input NAND gate using 2 input NAND gate.<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
4<\/span>\u00a0<\/span><\/td>\nHow many flip-flops are there in 5 <\/span>bits<\/span> serial out shift registers?<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
5<\/span>\u00a0<\/span><\/td>\nIf there are 2345 inputs un <\/span>multiplex<\/span>e<\/span>r<\/span>. Find number of selection lines and output lines.<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
6<\/span>\u00a0<\/span><\/td>\nRechye<\/span> 8:1 max using two 4:1 max.<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
7<\/span>\u00a0<\/span><\/td>\nWrite advantages of CMOS over TIL.<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
8<\/span>\u00a0<\/span><\/td>\nDefine fan out and fan in?<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
9<\/span>\u00a0<\/span><\/td>\nWhat do you mean by ripple counter?<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
10<\/span>\u00a0<\/span><\/td>\nDefine one bit memory.<\/span>\u00a0<\/span><\/td>\n2<\/span>\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0<\/span><\/p>\n

Section \u201cB\u201d<\/span>\u00a0<\/span><\/p>\n

Descriptive Answer Questions<\/span><\/b>\u00a0<\/span><\/p>\n

Attempt any six questions.<\/span> 6X10<\/span>\u00a0<\/span><\/p>\n

11.Convert the following number from the given base to the other bases indicated.<\/span>\u00a0<\/span><\/p>\n

    \n
  1. (1156)<\/span>8\u00a0 <\/span>= ( )<\/span>16<\/span> \u00a0<\/span><\/li>\n<\/ol>\n
      \n
    1. (3FD.ED)<\/span>16<\/span> = <\/span>()<\/span>10<\/span>\u00a0<\/span><\/li>\n<\/ol>\n
        \n
      1. (206)10 = <\/span>()<\/span>5<\/span>\u00a0<\/span><\/li>\n<\/ol>\n
          \n
        1. (1011.1011)<\/span>2<\/span> = <\/span>()<\/span>10<\/span>\u00a0<\/span><\/li>\n<\/ol>\n
            \n
          1. (<\/span>110011)<\/span>Gray<\/span> code<\/span> =<\/span> ( )<\/span>BCD<\/span>\u00a0<\/span><\/li>\n<\/ol>\n

            12.Simplify the following expression using Boolean algebra.<\/span>\u00a0<\/span><\/p>\n

            \"digital<\/span><\/p>\n

             <\/p>\n

             <\/p>\n

             <\/p>\n

              \n
            1. What is Don\u2019t care condition? Simplify the Boolean function in SOP and POS form:<\/span><\/li>\n<\/ol>\n

              \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 F (<\/span>w, x, y, z) = <\/span>\u03a3 (<\/span>0, 1,<\/span> 4, 6, 10, 11, 12)<\/span>\u00a0<\/span><\/p>\n

              \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 D (<\/span>w, x, y, z) = <\/span>\u03a3 (<\/span>2, 3, 6, 9, 15)<\/span>\u00a0<\/span><\/p>\n

                \n
              1. Explain full subtractor. Design Full Adder using two ha<\/span>lf adder and OR gate.<\/span><\/li>\n
              2. Design a <\/span>3-bit<\/span> binary gay code counter.<\/span><\/li>\n
              3. Design a 4-bit ALU and explain its expression.<\/span><\/li>\n
              4. What is full adder? Explain with help of truth table, block diagram and circuit diagram. Also construct full add<\/span>er with the help of two half adders and an OR gate. Explain in details.<\/span><\/li>\n<\/ol>\n

                Section\u201d C<\/span>\u201d<\/span>\u00a0<\/span><\/p>\n

                Case Study<\/span><\/b>\u00a0<\/span><\/p>\n

                18.<\/span>Draw the excitation table for RS, JK, T and D flipflop. Design a sequential machine for the state diagram shown in figure <\/span>below. (<\/span>20)<\/span>\u00a0<\/span><\/p>\n

                \u00a0<\/span><\/b>\u00a0<\/span><\/p>\n

                \"digital<\/p>\n

                 <\/p>\n

                These are the questions\u00a0 by Pokhara University Fall 2015\u00a0 Digital Systems.<\/p>\n

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