Analysis of information sources in references of the Wikipedia article "Slash (punctuation)" in English language version.
1. An English money of account, since the Norman Conquest of the value of 12 pence or 1/20 of a pound sterling. Abbreviated s. (__ L. solidus: see SOLIDUS), formerly also sh., shil.; otherwise denoted by the sign /- after the numeral.
2. a sloping line used to separate shillings from pence. A shilling mark.
sǒ·lidus, n. (pl. -di). (Hist.) gold coin introduced by Roman Emperor Constantine; (only in abbr. s.) shilling(s), as 7s. 6d., £1 1s.; the shilling line (for ſ or long s) as in 7/6. [LL use of L SOLIDus]
5 also slash mark: DIAGONAL : 4
Putting a "/" in front of the pin name is the standard text way of writing it with a line over it. The "/" or line signifies that the pin is activated by a low voltage, or logic 0.
It brings the Read/Write (R/W) line low to indicate a write