4.
1. ≪Electronic Workbench≫ (EWB), , -, -.
2. .
. . , .
, . , ( , ).
, .1. . ( ) , , . U U= U. , , , , . U= 0.
. 1. : (); ()
.1 , . , . () U, , (.2).
. 2.
U , . U, U. U , , U = 0 .
, U , U , . . . , . .
.3 .4 - (NOT-AND, NAND) - (NOT-OR, NOR).
. 3. -
. 4. -
. 5 .5 .
.5.
- - . , - - , . - -. ( , - - , .) ( ) 3-, 4- . .
1. II ≪ Electronic Workbench≫.
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2. .
2.1. :
. 1.
1 Electronic Workbench.
EWB | ||||
(Battery) | Sources | 100 (100 - ) | Component properties | |
(Battery) | Sources | 5 (5 ) | Rotate | |
(Ground) | Sources | - | ||
(Resistor) | Basic | 1 (1 ) | ||
NPN- (NPN transistor) | Transistors | - | ||
(Voltmeter) | Indicators | - | ||
(Connector) | Basic | - | ||
(Red probe) | Indicators |
2.2. Inverter.ewb.
2.3. Activate simulation EWB. . , ( 100 ).
2.4. 3 ( Component properties 100 ).
2.5. Activate simulation. .
2.6. . ?
3. -.
3.1. :
. 2. -
3.2 NAND.ewb.
3.3. :
() | ||
U1 | U2 | |
100 | 100 | |
100 | 3 | |
3 | 100 | |
3 | 3 |
3.4. Activate simulation EWB. . .
3.5. U1 3 ( Component properties ).
3.6. Activate simulation. .
3.7. U1 100 , U2 3 .
3.8. Activate simulation. .
3.9. 3 .
3.10. Activate simulation. .
3.11. . -?
4. -.
4.1. :
. 3. -
4.2. NOR.ewb.
4.3. 3.33.10 .
4.4. . -?
5. , , .
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5.1. . f(x,y,z), :
x | y | z | f(x,y,z) |
:
f (x, y,z) = x × y × z + x × y × z + x × y × z.
, , :
. 4.
2 EWB
EWB | ||||
(Switch) | Basic | 1 (Key 1) | ≪1≫. Component properties . Rotate | |
(NOT Gate) | Logic gates | - | ||
- (AND Gate) | Logic gates | 3 (3 inputs) | ||
- (ORGate) | Logic gates | 3 (3 inputs) |
≪1≫, ≪2≫, ≪3≫, 0 1 . ( 0 1 ). 8 , .
1
x | y | z | f(x,y,z) |
4
x | y | z | f(x,y,z) |
7
x | y | z | f(x,y,z) |
2
x | y | z | f(x,y,z) |
5
x | y | z | f(x,y,z) |
8
x | y | z | f(x,y,z) |
3
x | y | z | f(x,y,z) |
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6
x | y | z | f(x,y,z) |
9
x | y | z | f(x,y,z) |
10
x | y | z | f(x,y,z) |
13
x | y | z | f(x,y,z) |
16
x | y | z | f(x,y,z) |
11
x | y | z | f(x,y,z) |
14
x | y | z | f(x,y,z) |
17
x | y | z | f(x,y,z) |
12
x | y | z | f(x,y,z) |
15
x | y | z | f(x,y,z) |
18
x | y | z | f(x,y,z) |
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:
1. , -, -, ≪Electronic Workbench≫.
2. .
3. : NOT, AND, OR, NOT-AND, NOT-OR, XOR.
4. , .
1. ?
2. ? ?
3. , ? ? ?
4. ?
5. 24 .
6. -.
7. -.
II. Electronic Workbench
. , . - , , . .
Electronic Workbench (EWB) Interactive Image Technologies () . . EWB - , , , : , , . . EWB [25].
EWB 5.12 , . .
(, , , ) (, , ).
:
900
(Flip Horizontal)
(Flip Vertical)
( ).
, EWB.
Favorites (). , .
Sources ( ). :
Ground ()
Battery ()
Clock ( )
Basic ( ). :
Connector ( )
Resistor ()
Capacitor ()
Inductor ()
Switch ()
Potentiometer (, )
Diodes ()
Transistors (). :
NPN Transistor (NPN-)
PNP Transistor (PNP-)
N- Channel JFET (N- )
P- Channel JFET (P- )
Analog ICs ( ). .
Digital ICs ( ). SN74 ( 155), CD4000 ( 164, 176, 564, 561, 1561).
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Logic Gates ( ). :
2- Input AND Gate (2- ). 2 8.
2- Input OR Gate (2- ). 2 8.
NOT Gate ().
2- Input NOR Gate (2- -).
2- Input NAND Gate (2- -).
2- Input XOR Gate (2- ).
2- Input XNOR Gate (2-
-).
Tristate Buffer ( ).
Buffer ( ).
, .
Digital ( ). :
Half- Adder ().
Full- Adder ( ).
RS Flip- Flop (RS-).
D Flip- Flop (D-).
Multiplexers ().
Decoders ().
Encoders ().
Arithmetic ().
Counters ().
Shift Registers ( ).
Flip- Flops ( ).
Indicators (). :
Voltmeter ().
Ammeter ().
Bulb ( ).
Red Probe (). ,
.
Seven- Segment Display ( ).
Decoded Seven- Segment Display (
).
Buzzer ().
Bargraph Display ( 10 ).
Decoded Bargraph Display ( 10 ).
Controls ( ). , , .
Miscellaneous ( ).
:
Crystal ( ).
Textbox ( ).
Title Block ( ).
Instruments (- ).
:
Multimeter () , , .
Oscilloscope ()
Bode Plotter ( -
).
Word Generator ( ) 16- .
Logic Analyzer ( ) 16- .
logic Converter ( ) .
EWB, .
EWB . . .
, . , . ( , . .), Accept Enter.
. , . , ; , , .
Basic Connector ( ) . ( ), . , . , . .
, , .
(Word Generator)
Instruments :
( ), Binary ( ), ASCII ( ). Edit Address. 1024. Address (Current), (Initial) (Final).
:
Cycle. 16- , Initial Final, ;
Burst;
Step.
Frequency , (, , ) .
Breakpoint . , Breakpoint.
2. (Logic Analyzer)
16 , -. STOP , RESET .
, 1, 2 21, , .
3. - SN 74181
Digital Electronic Workbench SN 74181 ( 155 3):
32 , S0S3. S0, S1, S2, S3. 0, 16 (16 S0...S3) CN ( CN=0) ( CN=1). , 1, 16 , S0S3.
03 0 3 . F0F3.
CN+4, , G, =. 5 VCC GND.
SN 74181
=1 | , M=0 | |||||
S3 | S2 | S1 | S0 | CN=0 | CN=1 | |
Not A | A + 1 | A | ||||
not (A or B) | A + B + 1 | A or B | ||||
(Not A) and B | A + (not B) + 1 | A or (not B) | ||||
0 | 1 | |||||
Not (A and B) | A + Not (A and B)+ + 1 | A + (A and (not B)) | ||||
Not B | (A or B) + +(A and (not B)) + 1 | (A+B) + + (A and (not B)) | ||||
A xor B | A B | AB1 | ||||
A and (not B) | Not (A and B) | (A and (not B)) 1 | ||||
(Not A) or B | A + B +1 | A+(A and B) | ||||
Not (A xor B) | A + B + 1 | A + B | ||||
B | (A or (not B)) + + (A and B) + 1 | (A or (not B)) + + A and B | ||||
A and B | A and B | A and B 1 | ||||
1 | A + A + 1 | A + A | ||||
A or (not B) | (A or B) + A + 1 | (A or B) + A | ||||
A or B | (A or (not B)) + A + 1 | (A or (not B)) + A | ||||
A | A | A 1 |