: ; .
1.1.
, , , .
, , t i , .
n m = 2n , n 2n . .
( ), . , , . 2n n, 2n .
. , . . ( ). .
1.2. - 7445
. 1. 7445
7445 - 1. OrCAD 16.3, 7400.
A, B, C, D, , Y0, Y1,Y9, . , , .
, , A, C, D , ( 0010), Y2 . . 1010 1111, (Y0÷Y9) . 1.
7445 . . 30 . , , 80 mA. - 30 /0,08 = 375 . 7445 .
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1
A | B | C | D | Y0 | Y1 | Y2 | Y3 | Y4 | Y5 | Y6 | Y7 | Y8 | Y9 | |
0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
2 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
3 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
4 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
5 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 |
6 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
7 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
8 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 |
9 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
. 2.
7445
DSTM1 :
COMMAND1 0 ms 0000; COMMAND2 1 ms 0001;
COMMAND3 2 ms 0010; COMMAND4 3 ms 0011;
COMMAND5 4 ms 0100; COMMAND6 5 ms 0101;
COMMAND7 6 ms 0110; COMMAND8 7 ms 0111;
COMMAND9 8 ms 1000; COMMAND10 9 ms 1001.
Time Domain (Transient), : Run to Time: 10ms.
. 3. 7445
1.3. 8-
,
(74259)
74259 - 4. OrCAD 16,3, 7400.
S0, S1, S2, ( 000 111), Q0, Q1,Q7, . , (), .
1. : , .
(Q0÷Q7) .
. 4. 74259
2. . D (5 ).
3. D 8- . , . S0, S1, S2 , . . 8- D. .
, S0 , S1, S2 , Q1 , D, Q0 Q2Q7 .
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4. . . . S0S2 .
1 74259
| ||
1 | 0 | |
0 | 0 | |
0 | 1 | |
1 | 1 |
2
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| ||
S2 | S1 | S0 | |
0 | 0 | 0 | 0 |
0 | 0 | 1 | 1 |
0 | 1 | 0 | 2 |
0 | 1 | 1 | 3 |
1 | 0 | 0 | 4 |
1 | 0 | 1 | 5 |
1 | 1 | 0 | 6 |
1 | 1 | 1 | 7 |
( ) 7,5÷14 , 22÷60.
, 3- .
DSTM1 1 , .
4- :
COMMAND1 0ms 0000; COMMAND2 1 ms 0001; COMMAND3 2ms 0010;
COMMAND4 3ms 0011; COMMAND5 4 ms 0100; COMMAND6 5ms 0101.
Time Domain (Transient), : Run to Time: 5.5ms.
. 5.
74259
1. Lab_rab5, C:\Ivanov\Lab_rab5, Zadanie1 Zadanie2, Capture.
, 2.
DSTM1, : COMMAND1 0 ms 0000; COMMAND2 1 ms 0001; COMMAND3 2 ms 0010; COMMAND4 3 ms 0011;COMMAND5 4 ms 0100; COMMAND6 5 ms 0101;
COMMAND7 6 ms 0110; COMMAND8 7 ms 0111; COMMAND9 8 ms 1000; COMMAND10 9 ms 1001.
Transient : Run to time: 10 ms . Options. Category Gate-level Simulation ( ), Initialize all flip-flops to ( ) 0.
. 6. 74259
, (), 2.
, 6 . 6 : <Plot ()>→<Add Plot to Window ( ). ٸ <Trace>→<Add Trace>, Add Traces :
D0, D1, D2, D3;
: V(U1:Y0), V(U1:Y1), V(U1:Y2), V(U1:Y3), V(U1:Y4).
, 2, .
2. , 5. DSTM1 :
COMMAND1 0 ms 0000; COMMAND2 1 ms 0001; COMMAND3 2 ms 0010COMMAND4 3 ms 0011; COMMAND5 4 ms 0100; COMMAND6 5 ms 0101.
Transient : Run to time: 5,5 ms .
, 2 , D0, D1, D2, U1:Q0, U1:Q1, U1:Q2, U1:Q3, U1:Q4, U1:Q5, U1:Q6, U1:Q7, .6. .
1. OrCad Capture.
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2. 1 2, Zadanie1 Zadanie2.
:
1. 1.1, 1.2 1.3.
2. .
1. .
2. 7445 .
3. 74259 .
4. , 1.
5. , 2.
1. . PSPICE: . . .: , 2008. 336.: .
2. . . . : - ; . , 2007. 344 .: ., . ( ).
6
: ; .
1.1.
, - 4- . :
(1) (. 1 3) , - 4- (0011) . . . . , , - - |
. 1.
, . - , - , . .
1.2. (74147)
2. 7400 9 . () . 4- . |
. 2. 74147
9 (IN1 IN9), , 0 1. 4- (D, C, B, A) 4- , , . , .
, , 0.
, , . , IN6, D=1, C=0, B=0,A=1, . . 1001. 6 0110, , . . , 1001.
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, (D, C, B, A) , ( ), . , IN4 IN6 , 1001. IN4 IN7 , 1000 ( 0111 7). . , , . 74147 1.
1 74147
IN1 | IN2 | IN3 | IN4 | IN5 | IN6 | IN7 | IN8 | IN9 | D | C | B | A |
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
X | X | X | X | X | X | X | X | 0 | 0 | 1 | 1 | 0 |
X | X | X | X | X | X | X | 0 | 1 | 0 | 1 | 1 | 1 |
X | X | X | X | X | X | 0 | 1 | 1 | 1 | 0 | 0 | 0 |
X | X | X | X | X | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |
X | X | X | X | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 |
X | X | X | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
X | X | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
X | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 |
0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
74147:
10 .;
45 .
. 3.
74147
8- DSTM1 V1.
, , 1, Transient Run to time: 6 ms DSTM1: COMMAND1 0 ms 11111111; COMMAND2 1 ms 01111111; COMMAND3
2 ms 10111111; COMMAND4 3 ms 11011111; COMMAND5 4 ms 11101111; COMMAND6 5 ms 11110111; COMMAND7 6 ms 11111011.
. 4. ,
74147
1.3. ( 0 7) 3-
(74148)
. 5. 74148
5. 7400 8 . , , . 3- .
8 (IN0, IN1,..,IN7), , 0 1. (2, 1, 0) 3- , , .
. , IN0 , (2, 1, 0) , . . 111, 000.
IN3, : 2=1, 1=0, 0=0. 011.
, (2, 1, 0) , ( ), . , IN1 IN4 , 011 ( 100 4).
7 (IN0, IN1,,In7) 3- (2, 1, 0) 2 GS EO. . GS , - . , EI. EI . 74148 2.
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2 74148
EI | IN0 | IN1 | IN2 | IN3 | IN4 | IN5 | IN6 | IN7 | A2 | A1 | A0 | GS | E0 |
0 | X | X | X | X | X | X | X | 0 | 0 | 0 | 0 | 0 | 1 |
0 | X | X | X | X | X | X | 0 | 1 | 0 | 0 | 1 | 0 | 1 |
0 | X | X | X | X | X | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
0 | X | X | X | X | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 |
0 | X | X | X | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
0 | X | X | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 |
0 | X | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |
0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 |
74148:
10 ;
38 .
, 74148.
. 6.
74148
, , 2, Transient Run to time: 8ms DSTM1: COMMAND1 0 ms 01111111; COMMAND2 1 ms 10111111; COMMAND3 2 ms 11011111; COMMAND4 3 ms 11101111; COMMAND5 4 ms 11110111; COMMAND6 5 ms 11111011; COMMAND7 6 ms 11111101; COMMAND8 7 ms 11111110.
. 7. , 74148
1. Lab_rab6, C:\EMb-11-1\Ivanov\Lab_rab6, Zadanie1 Zadanie2, Capture.
, 3. :
V1;
DSTM1, .
, ().
Transient : Run to time: 7us . Options. Category Gate-level Simulation ( ), Initialize all flip-flops to ( ) 0.
, : D0, D1, D2, D3, D4, D5, D6, D7; U1:A, U1:B, U1:C, U1:D. .
2. , 6. :
V1;
DSTM1, .
, ().
Transient : Run to time: 8ms . Options. Category Gate-level Simulation ( ), Initialize all flip-flops to ( ) 0.
, : D0, D1, D2, D3, D4, D5, D6, D7; U1:A0, U1:A1, U1:A2. .
1. .
2. OrCad Capture.
3. 1 2, Zadanie1 Zadanie2.
:
1. 1.1, 1.2 1.3.
2. .
1. .
2. 74147 .
3. 74148 .
4. , 1.
5. , 2.
1. . PSPICE: . . .: , 2008. 336.: .
2. . . . : - ; . , 2007. 344 .: ., . ( ).