The use of digital input and output is to provide information processing systems such as computers with the data they need to work on. Logic states are the basis for the digital input devices which means only two possible values can be given after processing the data. One can know whether voltage is high or low compared to a set value by using the digital input devices for this purpose. If voltage is above the given value, the digital input will show this by turning on the light emitting diodes and turn off for values lower than the given one.
Digital output, on the other hand, provides feedback after processing the given data fed into information processing devices. These output devices only give data in the form of logo data which indicates two possible values for a given condition. The digital output also allows one to use a computer to control the voltage of a circuit by setting on either high or low. When set to high the processors will give out a voltage while if set to low, no voltage will be produced by the device.
Data acquisition involves taking samples of physical processes in the real world and doing measurements on them to produce digital data. The digital data acquired from these tests are fed into computers for processing to get accurate information about such processes and conditions.
These systems work by using three components that are sensors girl reading the condition, circuits for taking the signals and convert them to data and devices that take the data from circuit to produce an output accepted by computers. The process of interpreting and making sense of data from these systems requires the use of computer software designed for this goal. This is because the systems are used for complex conditions which require fast processing and therefore the need for advanced programs to aid in the process. The application of data acquisition ranges from processes like measuring temperature and force of earthquakes too much more natural processes and events.
Analog input and output devices are applied for conditions that do not have fixed outcomes or ones with continuous nature. The nature of conditions that use digital input and output is those that have a fixed outcome value mostly two-way options. Digital input and output can be read using both digital and analog measurements while analog data is only read using the analog measurement. Application for digital data is in only cases which require determining the truth or presence of a condition while analog goes on to give exact details about the condition in question.