Tugas 6

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Nama NIM Offering

: David Eka Kristianto : 130533608210 : PTI C’13

SOAL : 1. Buat Sebuah rangkaian multiplexer 4-line to 1-line dari gerbang NAND saja 2. Desain sebuah rangkaian multiplexer 8x1 yang dibentuk dari dua buah multiplexer 4x1(Dual 4-line to 1-line Multiplexer 74153). Gunakan enable input untuk mengaktifkan kedua mux tersebut. 3. Buat rangkaian yang mengkonversikan Binary Code 4 bit ke Gray Code.

Jawab : 1. gambar rangkaian Multiplexer 4-line dari gerbang NAND saja S1

S0

Enable Input

I0

I1

Y

I2

I3

Tabel rangkaian multiplexer 4-line to 1-line dari gerbang NAND Select Input S1 S0 x 0 0 1 1 0 0 1 1

x 0 0 0 0 1 1 1 1

Enable Input E 1 0 0 0 0 0 0 0 0

Input I0 x 0 1 x x x x x x

I1 x x x 0 1 x x x x

I2 x x x x x 0 1 x x

Output Y

I3 x x x x x x x 0 1

0 0 1 0 1 0 1 0 1

2. Gambar rangkaian Multiplexer 8x1 yang dibentuk dari dua buah multiplexer 4x1 (Dual 4-line to 1-line multiplexer 74153) I0 I1 I2

4x1 MUX

I3 E

S1

S2

F

I0 I1

4x1

I2

MUX

I3 E

Enable

3.

S1

S2

Rangkaian yang mengorversikan Binary Code 4 bit ke gray code a. Logika XOR A

AB’

X= A’B + AB’ B

A’b

b. Kombinasi XOR dengan gabungan AND-OR-NAND (AB)’

A

X= A’B + AB’

B A+B

Jadi, X = (AB)’(A+B) = (A’ + B’)(A + B) = A’A + A’ B + B’A + B’B Simbol logika dan persamaan untuk XOR X=A+B = A’B + AB’ A X B

-

Rangkaiankonversi Binary Code 4 butake Gray Code

-

Tabel Perbandingan Binary Code 4 bit dengan Gray Code

Decimal 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

B3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1

Binary Code B2 B1 0 0 0 0 0 1 0 1 1 0 1 0 1 1 1 1 0 0 0 0 0 1 0 1 1 0 1 0 1 1 1 1

B0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1

G3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1

Gray Code G2 G1 0 0 0 0 0 1 0 1 1 1 1 1 1 0 1 0 1 0 1 0 1 1 1 1 0 1 0 1 0 0 0 0

G0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0

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