IPROM

IPROM elektor december 1981 — 12-15 IPROM 1 A non-volatile RAM As every (micro) computer operator will agree, having an area of non-volatile RAM (Random Access Memory) situated IC2 2 > 2,4 V somewhere in the system could 0 prove to be very useful. If 0 development work on a particular program has to be halted for any 0 reason, the machine can be 23 A, IC1 turned off without having to 22 • 19 A9 04 Ds HM 6116 LP transfer the program to cassette or R18 EPROM. When the computer is turned on again, the program will 0 still be stored in memory and 10 work can continue from where it was left off — without having to reload the partly completed , 11 13 14 N2 11 4 13 .41,Logram into the computer. 0 All that is required is RAM devices having a very low power consumption in the "standby mode" and one or two small 17 batteries to power the RAM while the machine is turned off. This article goes one step further by describing a "plug-in" instantly programmable read only memory 0 (IPROM) m...