Babbage/Lovelace had their mechanical notation but their work looks to be digital, not analog. (diagrams here: http://blog.stephenwolfram.com/2015/12/untangling-the-tale-of-ada-lovelace/)
Babbage/Lovelace had their mechanical notation but their work looks to be digital, not analog. (diagrams here: http://blog.stephenwolfram.com/2015/12/untangling-the-tale-of-ada-lovelace/)