How Adders and also Adder/Subtractor fit into the origins of Digital Computing.

ASSIGNMENT:
In APA style provide a two-page summarization (minimum) body of your document, in your own words on how Adders and also Adder/Subtractor fit into the origins of Digital Computing. You should find a good bit of information on the Origins of Digital computers all the way back to now obsolete tube type computers. You can be creative on this one as long as you can tie the information directly back to Digital and Adders. To assume the binary information the computer uses to compute would be a step in the right direction on this topic.

NOTE: I need two pages of copy. Do not do the title page, abstract, etc. Just need two pages and at least 3 cited sources.