A PCR chip cycle is a checked sequence of thermal control windows. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

A cycle is staged time

The staged control windows fill one cycle of 10 s.

tcycle=10 st_{\text{cycle}}=10\ \text{s}
Timeline budgetInstrument windows are checked before interpretation.denatureannealextendtimed program

Cycle time repeats

For 6 cycles, the program time is 60 s. This is thermal scheduling, not reaction kinetics.

ttotal=6tcycle=60 st_{\text{total}}=6t_{\text{cycle}}=60\ \text{s}
Timeline budgetInstrument windows are checked before interpretation.denatureannealextendtimed program