Data acquisition is the process by which events in the real world are sampled and translated into machine-readable signals. Data acquisition typically involves sensors, transmitters and other instruments to collect signals, waveforms etc. to be processed and analyzed with a computer. The components of data acquisition systems include appropriate sensors that convert any measurement parameter to an electrical signal, which is acquired by data acquisition hardware. Acquired data typically is displayed, analyzed, and stored on a PC. In our project the Temperature data was monitored by using the Microcontroller & PC. The Project has an Inbuilt Data logger which is used to Log the Temperature data on the PC.
A data logger is any device that can be used to store data. This includes many data acquisition devices such as plug-in boards or serial communication systems which use a computer as a real time data recording system. The Microcontroller AT89S52 has 8K Bytes of In-System Programmable (ISP) Flash Memory.