Implementation of logic and digital systems
Implementation of basic logic functions of different technologies

## Logical conjunction – AND

In the following examples, it is possible to study the technical implementation of the conjunction of two independent variables. The dependent variable takes value true only if at the same time both the independent variables are true. The control circuit is the solution to serial connection buttons. Implementation of transistors is solved using serial connection of transistors. The mechanical form is needed to operate both the mechanical linkage (a, b), in order to overcome the spring force.

Fig. 3.2: Logical conjunction function – AND

## Logical disjunction – OR

In the following examples, it is possible to study the technical implementation of the disjunction of two independent variables. The dependent variable takes a value of true if at least one independent variable is true. The control circuit is connected in parallel solution keys. Implementation using transistors is also dealt with parallel connection of transistors. The mechanical work is needed to form at least one of the mechanical linkages (a, b).

Fig. 3.3: Logical disjunction function – OR

## Logical negation – NOT

In the following examples, it is possible to study the technical implementation of the negation of one independent variable. The dependent variable takes a value of true if the independent variable is false. The control circuit is the solution involved opening contacts button. Implementation is solved using a shorting transistor voltage transistor. The mechanical action of the form of mechanical linkage (a) is performed opposite reaction rod x.

Fig. 3.4: Logical negation function – NOT