AQA 7408 A-Level Physics coverage of electronics (3.13 — optional E): discrete semiconductor devices and junction transistors; analogue vs digital signals; operational amplifiers (open-loop / inverting / non-inverting / summing) and negative feedback; filters and analogue signal processing (low-pass, high-pass, band-pass); logic gates and combinational Boolean algebra; sequential logic (flip-flops, counters, registers); data communication (modulation, transducers, channels). Optional unit — students only need this course if their school chose option E.
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