Contents
What does a circle mean on a circuit?
A circle on an input means that it is active low, you may also see the pin name with a line drawn above it. A circle on an output means that either the output is active low or that the logic gate is inverting.
What do circles symbolize?
The circle is a universal symbol with extensive meaning. It represents the notions of totality, wholeness, original perfection, the Self, the infinite, eternity, timelessness, all cyclic movement, God (‘God is a circle whose centre is everywhere and whose circumference is nowhere’ (Hermes Trismegistus)).
What does a full slash in a circuiting symbol mean?
The slash indicates that it is a bus.
Which symbol is on and off?
(1 or | means on.) IEC 60417-5008, the power-off symbol (circle) on a button or toggle, indicates that using the control will disconnect power to the device. (0 or ◯ means off.) IEC 60417-5009, the standby symbol (line partially within a broken circle), indicates a sleep mode or low power state.
Why are circles so important?
Circles are still symbolically important today -they are often used to symbolize harmony and unity. For instance, take a look at the Olympic symbol. It has five interlocking rings of different colours, which represent the five major continents of the world united together in a spirit of healthy competition.
What do 3 circles represent?
They are used by a number of different cultural groups in Central Africa. WHAT MESSAGE DO THEY CONVEY? For the Luba, the three circles represent the Supreme Being, the Sun and the Moon. This combination of circles symbolizes the unfailing continuity of life.
Is the I or O on or off?
It comes from the binary system (1 or | means on). O – IEC 5008, the power off (circle) symbol on a button or toggle, indicates that using the control will disconnect power to the device. It comes from the binary system (0 means off).
What does NC mean in a microchip Pinout diagram?
It looks like it would be safe to leave it unconnected (based on @JonRB’s answer). After you hear back from them you can answer your own question here (for the benefit of people searching for this answer). This may mean that the pin will read 1.1v in normal operation, but it’s very confusing to the engineer or technician.
What does the terminal strip mean in a wiring diagram?
The terminal strip is a mark that refers to a group of terminal blocks with the same voltage level or the same purpose. From these terminal blocks, we move on to a three-pole circuit breaker with thermal and short circuit protection capability. Every standard wiring diagram should be drawn in the neutral condition.
What does type p mean on a microchip?
Since it’s labelled as a type P, it should be a power input pin for RTC. It appears that if you keep RTC powered on, it will keep basic settings intact while in sleep. Even though complete info is not present, I think pin 5 can be fed 1.1V externally to keep the RTC running even while your 3.3V supply is off.