Xerox Controller Design.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
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A microprocessor system was designed, based on the Imsai 8048CC Single Board Computer SBC, to identify authorized volume users of the Xerox copying machine operated by the AFIT Engineering Student Council. A power relay mounted on the SBC was used to enable the Xerox to make copies and a buffer circuit, based on the SN74121 one shot, was employed to count the copies made so that they could be charged to the identified users account. An interactive FORTRAN program was implemented on the CYBER system available at AFIT to keep a file of authorized users, their unique users numbers, and the identification necessary to bill them. The program in the microprocessor was designed to allow the student council treasurer to set the copy cost, the code used to identify valid user numbers, and any account total increment, decrement, and set. Routines are also provided to clear all accounts to zero and print all non-zero account totals on the TI model 735 terminal. The program is interrupt driven and the account totals, copy cost, and code maintained in memory are protected from loss by a battery backup circuit.
- Administration and Management
- Computer Programming and Software
- Computer Hardware