Electronic taximeter with computer loop

Details Electronic taximeter with computer loop Electronic taximeter with computer loop

G - Physics

07

B

354/33

G07B 13/04 (2006.01) G07B 13/00 (2006.01)

Patent

CA 1078518

ABSTRACT OF THE DISCLOSURE The invention relates to a dedicated microprocessor for an electronic taximeter, and a taximeter including the microprocessor. The microprocessor includes, a) a main memory for storing data at a plurality of storage locations therein; b) a data memory for receiving input data at a plurality of storage locations therein; c) a combiner for combining the data storage locations of the main memory with the input data of re- spective storage locations of the data memory for updating the main memory; d) a program memory for controlling the operation of the data memory, and comprising a plurality of storage locations therein; e) a counter for sequentially selecting the storage locations of the main memory and the program memory; and f) clock means for driving the counter means through its cycle. The main memory means is preferably a random access memory (RAM), and the data memory means and the program memory means can comprise, respectively, first and second read only memory (ROM) means. Each of the storage locations of the RAM and the first ROM com- prise four bits of information whereby a single binary coded digit (BCD) can be stored at each of the aforesaid storage loca- tions, and the combiner is preferably a BCD adder.

282441

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