Cincinnati Children's Archives on Twitter: "The Archives hold two early electric calculators, Monroe Model 88N-213 and a Marchant, the supercomputers of their time. The Monroematic, made in the 1950's was used in
![1954 Monro Matic Simplex 8N Calculator Vintage Look Funny Aluminum Metal Sign Funny Easy to Mount Indoor & Outdoor Use 8 x 12 : Amazon.ca: Office Products 1954 Monro Matic Simplex 8N Calculator Vintage Look Funny Aluminum Metal Sign Funny Easy to Mount Indoor & Outdoor Use 8 x 12 : Amazon.ca: Office Products](https://m.media-amazon.com/images/I/81k1jEneuzL._AC_SL1500_.jpg)
1954 Monro Matic Simplex 8N Calculator Vintage Look Funny Aluminum Metal Sign Funny Easy to Mount Indoor & Outdoor Use 8 x 12 : Amazon.ca: Office Products
Cincinnati Children's Archives on Twitter: "The Archives hold two early electric calculators, Monroe Model 88N-213 and a Marchant, the supercomputers of their time. The Monroematic, made in the 1950's was used in
![10 x 14 METAL SIGN - 1954 Monro-Matic Simplex 8N Calculator - Vintage Rusty Look Metal Sign - Walmart.com 10 x 14 METAL SIGN - 1954 Monro-Matic Simplex 8N Calculator - Vintage Rusty Look Metal Sign - Walmart.com](https://i5.walmartimages.com/asr/7893289a-7b29-4110-b80b-05bf8ff99e0f.f75cd52182d0f519d454eb0fe405b642.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)