Search results
Results from the WOW.Com Content Network
A logic circuit diagram for a 4-bit carry lookahead binary adder design using only the AND, OR, and XOR logic gates.. A logic gate is a device that performs a Boolean function, a logical operation performed on one or more binary inputs that produces a single binary output.
Other authors use the term "complementary pass transistor logic" (CPL) to indicate a style of implementing logic gates using dual-rail encoding. Every CPL gate has two output wires, both the positive signal and the complementary signal, eliminating the need for inverters. [9] [10] [11] Complementary pass transistor logic or "Differential pass ...
Schematic of basic two-input DTL NAND gate. R3, R4 and V− shift the positive output voltage of the input DL stage below the ground (to cut off the transistor at low input voltage). Diode–transistor logic (DTL) is a class of digital circuits that is the direct ancestor of transistor–transistor logic.
If any of the logic gates becomes logic low (transistor conducting), the combined output will be low. Examples of this type of gate are the 7401 [15] and 7403 [16] series. Open-collector outputs of some gates have a higher maximum voltage, such as 15 V for the 7426, [17] useful when driving non-TTL loads.
Diode–transistor logic (DTL) was used in the IBM 608 which was the first all-transistorized computer. Early transistorized computers were implemented using discrete transistors, resistors, diodes and capacitors. The first diode–transistor logic family of integrated circuits was introduced by Signetics in 1962.
Motorola ECL 10,000 basic gate circuit diagram from 1972. [1] Note the Q5 and Q6 emitters coupled to the output. In electronics, emitter-coupled logic (ECL) is a high-speed integrated circuit bipolar transistor logic family.
Metal–oxide–semiconductor field-effect transistor (MOSFET), showing gate (G), body (B), source (S) and drain (D) terminals. The gate is separated from the body by an insulating layer (white). A transistor is a semiconductor device used to amplify or switch electrical signals and power. It is one of the basic building blocks of modern ...
Its main function is to invert the input signal applied. If the applied input is low then the output becomes high and vice versa. Inverters can be constructed using a single NMOS transistor or a single PMOS transistor coupled with a resistor. Since this "resistive-drain" approach uses only a single type of transistor, it can be fabricated at a ...