Sequential (70) latch unlatch
https://chihaukam.blogspot.com/2024/11/1-2-3.html?m=1 . Ref: https://wodewangzhishime.blogspot.com/2021/12/httpswodewangzhishime_28.html?m=1 . . . Me: The above picture is a transistor-latch . . This latch is formed by one PNP transistor and one NPN transistor. When we give a positive voltage to the gate of T1, T1 will be conducted forever. We call that a latch. Me: How can we let a latch unlatch ?? . VSS stand for source of power. . 1) Give a negative voltage to the gate of T1 2) Cut the power of T2. 3) Let D1 forward bias. . John: A latch is to temporarily latch the data in the memory, when the latch unlatch, the memory will lose forever.