i need a code and diagram to make circuit arduino uno with these sensors MQ_7 gas sensor with (buzzer 4_8v DC) Dht22 flame detection sensor digital with (buzzer 4 - 8v Dc) hw 596 pressure alarm all these sensors show on lcd 20*4 i2c

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Up-down counter

In digital logic and computing, a counter is a device that stores (and sometimes displays) the number of times a particular event or process has occurred, often in relationship to a clock. A sequential digital logic circuit is the most common type with an input line or clock and multiple output lines. In the binary or binary-coded decimal (BCD) number system, the values on the input line represents a number by several flip-flops connected in a cascaded manner. They are manufactured as separate integrated circuits and are widely used components in digital circuits. These are also a part of larger integrated circuits. These are a specific type of sequential circuit like registers or the value of the flip-flops serving as the output.