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The system accurately measures a summation of the operations when an operating voltage is present. The system includes a capacitor charged by a supply voltage and a volatile memory register connected to receive the operating voltage signals to be measured and operable to store those signals as a mea

The system accurately measures a summation of the operations when an operating voltage is present. The system includes a capacitor charged by a supply voltage and a volatile memory register connected to receive the operating voltage signals to be measured and operable to store those signals as a measure of operations. A nonvolatile memory register is provided having stages corresponding to the stages of the volatile memory register. A store sequencing means is connected to be powered by the energy stored in the capacitor when the supply voltage is removed to transfer the count stored in the volatile memory register into the nonvolatile memory register. A means is provided for detecting when the supply voltage is applied, with a recall sequencing means operable in response thereto to transfer the count stored in the nonvolatile memory register into the volatile memory register.

대표청구항 ▼

A cumulative operations measurement system for connection to a source of supply voltage and operable in response to an operating voltage for accurately measuring a summation of the operations when that operating voltage is present, said system comprising a capacitor connected to be charged by the su

A cumulative operations measurement system for connection to a source of supply voltage and operable in response to an operating voltage for accurately measuring a summation of the operations when that operating voltage is present, said system comprising a capacitor connected to be charged by the supply voltage, a volatile multiple-stage memory register connected to receive the operating voltage signals to be counted at the low order end thereof and operable to store said signals as a measure of total operations, a nonvolatile multiple-stage memory register having stages corresponding to at least some of the stages of said volatile memory register, means for detecting when the supply voltage is removed, a store sequencing means connected to be powered by the energy stored in said capacitor and connected to said last-named means and operable in response thereto to transfer the count stored in said volatile memory register into said nonvolatile memory register for storage therein, means for detecting when the supply voltage is applied. a recall sequencing means connected to said last-named means and operable in response thereto to transfer the count stored in said nonvolatile memory register into said volatile memory register.