1 Merino is one of the softest types of wool available, because of finer fibers and smaller scales.  Merino has an excellent warmth-to-weight ratio compared to other wools, in part because the smaller fibers have microscopic cortices of dead air, trapping body heat similarly to the way a sleeping bag warms its occupant.
Transistorâtransistor logic (TTL) is a class of digital circuits built from bipolar junction transistors (BJT) and resistors.
This allows complex circuits to be built from simple components in a sort of building blocks fashion. The TTL (Transistor Transistor Logic) circuit family is one such circuit family. TTL circuits use two voltage levels, 0 volts and +5 volts to represent the two binary digits 0 and 1 respectively.