Abstract
The programmerf or microprocessors is a necessary device for developing microprocessorsystem . This paper introduces the design of the programmer,This article gives a particular descriptionof the designing approach and realizing method of 51 series Programmer.which supports series of AT-89C5X microprocessors and the features of which are simpleness in circuit and low cost. The paper a-lso gives the complete circuit schematic and flow chat.This programmer is a cheap single chip develo-ping tool, also a device to investigate software and hardware, whichcan be widely used and generaliz-ed in many fields.
Key words: programmer;microprocessor; serial communication