Järjestikloogi

Järjestikloogi, also known as sequential logic, is a type of digital logic circuit whose output depends not only on the present inputs but also on the past sequence of inputs. This is in contrast to combinational logic, where the output is solely determined by the current input values. The key characteristic of sequential logic is its ability to store information, allowing it to "remember" previous states.

This memory element is typically implemented using flip-flops or latches. Flip-flops are bistable devices that can store a single bit of information and change their state based on clock signals and input data. Latches are similar but are often level-sensitive, meaning they change their output as long as the enable signal is active.

Sequential logic circuits are fundamental to many digital systems. They are used in counters, which keep track of the number of events, and shift registers, which move data bits sequentially. They are also essential for building state machines, which are used to control the behavior of a system by transitioning between different defined states. The design of sequential logic circuits involves understanding state transitions and the timing of signals, particularly the clock signal that synchronizes state changes. The analysis and design of these circuits are typically performed using state diagrams and truth tables.