The Design of the Simplified Calculator Based on Single-chip Computer
Abstract:This article expatiates the process of one design of the simplified calculator based on single-chip computer. The program of the addition , subtraction, multiplication and division defined as the basic function of simplified calculator is written by C language . The above functions are realized by the combination of the single-chip computer, digital tube & keyboard driver chip HD7279A , digital tube and correspond key. Based on the realizing of the basic function of the simplified calculator, the system was developed on the funtions of saving result and advancing precision. The number of digit bit in this system reaches 8,while the compute precision reaches two decimal palces.