عاكس (بوابة منطقية)
| INPUT | OUTPUT |
| A | NOT A |
| 0 | 1 |
| 1 | 0 |
ملف:IEC NOT.svg بوابة العاكس (ليس) المنطقية عي بوابة تعني عكس القيمة الرقمية(المنطقية) للمتغير الرقمي,إن دخول متغير رقمي بقيمة 0 ينتج القيمة 1 على الطرف الآخر من البوابة,توضح بوابة ليس بمثلث رأسه متبوع بدائرة بحيث رأس المثلث المتبوع بدائرةقد يكون في طرف القيمة الناتجة.
Electronic implementation
NMOS inverter
PMOS inverter
Static CMOS inverter
NPN transistor–transistor logic inverter
Depletion-load NMOS logic NAND
Saturated-load NMOS inverter
NPN resistor–transistor logic inverter
Digital building block
The inverter is a basic building block in digital electronics. Multiplexers, decoders, state machines, and other sophisticated digital devices may use inverters.
The hex inverter is an integrated circuit that contains six (hexa-) inverters. For example, the 7404 TTL chip which has 14 pins and the 4049 CMOS chip which has 16 pins, 2 of which are used for power/referencing, and 12 of which are used by the inputs and outputs of the six inverters (the 4049 has 2 pins with no connection).
Alternatives
If no specific NOT gates are available, one can be made from NAND or NOR gates, because NAND and NOR gates are considered the "universal gates", meaning that they can be used to make all the others.
| NAND construction | NOR construction |
|---|---|
Performance measurement
See also
- Controlled NOT gate
- AND gate
- OR gate
- NAND gate
- NOR gate
- XOR gate
- XNOR gate
- IMPLY gate
- Boolean algebra
- Logic gate
وصلات خارجية
- The Not Gate on All About Circuits
-
CMOS Hex Inverting Buffer/Converter from Texas Instruments
- Datasheet: CMOS Hex Buffer/Converter
References
- ^ Mano, M. Morris and Charles R. Kime. Logic and Computer Design Fundamentals, Third Edition. Prentice Hall, 2004. p. 73.
