semiconductor device, the 2N2222A, is used to amplify or switch electronic
signals and electrical power. It's made of semiconductor material and has at
least three terminals for connecting to a circuit outside of it. The current
through another pair of terminals is controlled by a voltage or c..
The 2N3904 is
a common NPN bipolar junction transistor used for general-purpose
low-power amplifying or switching applications. ... It is a 200 mA, 40 V, 625
mW transistor with a transition frequency of 300 MHz, with a minimal
beta, or current gain, of 100 at a collector..
clock pulses of 3.579 MHz frequency. Because these are very common and
inexpensive they are used in many other applications, for example DTMF
generators. It is a common clock for HT9170B DTMF decoder. It uses the
mechanical resonance of a vibrating crystal of piezoelectric material t..
‘Watch’ or Real-Time-Clock crystal. 32.768 kHz means it is precisely half of a
16-bit counter. Start counting at 0x8000 (or 32768). When the counter rolls
over from 65535 to 0, then you know that exactly one second has passed. Reset
the interrupt, reset the counter, and start counting a..