The term digital denotes that which is related to counting. The name is more frequently found in computer related fields, where the data is being processed and stored in to binary numeric form. The abacus can be treated as an early form of digital unit. . The digital system is used in the field of electronics as well. When the audio data is digitally encoded, it may produce a digital noise due to the interference or background noise while recording the sound. In computer keyboards, symbols are being converted to digital data which is a relatively simple process with little data loss.