| 
  
  
                | Math Logic |  | 
                | 
 |  
	 	| Question : |  
	 		    | What 
                  is an Arithmometer ? |  
	 	| Answer :
 |  
	 		| It is a computing machine. |  
	 		| Arithmometer was  designed by Charles Xavier Thomas de Colmar in 1820. |  
	 		    | Arithmometer 
                  is made of brass, steel, and wood and is fitted with a leather 
                  case suitable for desktop use. Pulling an attached ribbon rotated 
                  several drums, each of which turned a gear connected to a digital 
                  counter. |  
	 		| The arithmometer designed by Baldwin (patented 1875), could add, subtract, multiply, and divide.
			Economic conditions, however, prevented its immediate manufacture. |  |