Implementing basic gates : r/logisim - Reddit
2016年10月21日 · The site shows TTL (transistor-transistor-logic), but logisim doesn't simulate current-flow or general-resistors or anything like that. If you want to play around with more general electronic circuits, I really recommend Falstad's circuit simulator .
How to build XOR, AND, OR gates from transistors in Logisim?
2021年4月13日 · Can anyone recommend a tutorial or circuit diagram for building the XOR, AND, OR gates from transistors in Logisim? Or how to build other gates that can then be used to implement XOR, AND, OR. I have very little experience with transistors so I am looking for a resource specifically targeted at Logisim users. Thanks!
Transistorized gates on Logisim - All About Circuits
2012年8月1日 · I use Logisim to simulate the logic, and unfortunately the lack of diode is proving troublesome. For instance here is a transistorized XOR gate: It takes five diodes and Logisim can't simulate them, being a pure logic simulator.
XOR gates take a lot of transistors. Is there a good design ... - Reddit
2021年4月27日 · Well, if you really want to limit transistor count, a XOR is easily implemented using only 2 SPDT relays. The good old 3-way light circuit is a XOR. Which makes me think there may be a way to do it using only 4 transistor if you use both enhancement and depletion mode fets. Or 4 BJT (2 NPN and 2 PNP) if you use a negative (sink) zero.
What is wrong with this XOR gate built with four transistors?
2017年4月13日 · Howerver the xor gate there and also on Wikipedia seems needlessly complicated. I simulated the following circuit in Logisim and it seems to work. It is based on the idea that input B switches between A and not A. Since I did not find this circuit documented as an XOR implementation, I expect it is not feasible. Please explain why.
transistors - Implementing three-state logic - Electrical …
2022年10月25日 · Logisim has transistors, but it also has buffers and inverters with three state output. A three state output is like a standard push-pull output, but both the high side and low side output transistors are separately controlled to let them either output a signal in push/pull mode or keep both of them off.
simulation - Logisim: timing problems setting register - Electrical ...
For this to work, the D input must already be receiving the logical 1 when the clock signal arrives. If, by using an N-type transistor, we only let the data line be high when the clock is high, then the register will no longer be correctly set, due to the delay introduced by the transistor:
Logisim Problem - Electrical Engineering Stack Exchange
2017年7月22日 · \$\begingroup\$ Note that logisim doesn't accurately simulate transistors. @laptop2 this is electrical design \$\endgroup\$ – Criticizing Israel not allowed Commented Jan 26, 2018 at 4:16
CMOS OR gate using 4 Transistors - Electrical Engineering Stack …
2014年12月13日 · So, ASSUMING THE INPUT IS AT VDD, as the output rose from 0 toward VDD, the current flowing through the transistor would become less and less until Vout = VDD - Vgs(th). This could kind of sort of work for a single gate in isolation, but if you tried to put two in series, the weak high output of the first gate would cause the second gate to ...
1 bit full adder made using Transistors : r/logisim - Reddit
2023年6月21日 · A NOT gate takes one transistor, AND and OR take two, and XOR takes like four or six, not sure exactly. And in the real world, the circuit would also need a ton of resistors to pull the floating signals to ground.