#_1 sensorwalk

There are quite many sensors when walking around the various hoods I pass on a daily basis. The more sensors I thought I was encountering the more metaphoric – and blurry – they got (policeman [analog or digital], hanging doorbell in a shop that triggers unreliably [analog or digital], motion detecting water tap [digital?] vs basic water level measuring toilet flush [analog, I guess], individual tolerance level [analog, we still believe]).

So, here are the most basic ones I figured out, sticking to the literal meaning of sensor (i.e.: 1 : a device that responds to a physical stimulus (as heat, light, sound, pressure, magnetism, or a particular motion) and transmits a resulting impulse (as for measurement or operating a control) http://www.merriam-webster.com/dictionary/sensor):

1. Trafficlight
digital sensor
(red hand: 0 | man: 1)

2. Public Phone

.1 Coin Slot
digital sensor
(noMoney/noTalk = 0 | Money/Talk = 1)

.2 Dial
digital sensor
(noPress = 0 | Press = 1)

.3 Receiver
analog sensor
(mumblemumble = 0.1-0.3 | blablabla = 0.4-0.8 | AARGH = 0.9-1)
hypothetically assuming a scale on which 0.4-0.8 would be the stereotypical sound level (SPL) for a phone conversation.

Considering language in general, one might model words as reality sensors. Negations, local or global, form digital pairs and lexicalized opposites form analog poles, which allow for states in between that can be formalized on scales. So you could model pairs such as happy/unhappy as a way of digital expression whereas pairs such as happy/sad have more of an analog touch to them. Similar, all/not all (*nall) vs all/none, live/not live vs live/die, ...