3rd Class Computers Science History of Computer Hollerith's Machine

        Hollerith's Machine  

Herman Hollerith was an American statistician who developed a mechanical tabulator based on punched cards to rapidly tabulate statistics from millions of pieces of data. It was a tabulating machine which could count quickly.  It was the first automatic data processing system. The tabulating machine was an electrical device which assisted in summarizing information and accounting. This machine was developed in 1887. The machine was developed to help process data for the 1890 U.S. census. It was the first electromechanical punched card tabulator. He used punched cards for input, output and instructions. This machine was used by American Department of Census to compile their 1890 census data. The system used a hand punch to record the data as holes in dollar-bill-sized punch cards and a tabulating machine to count them. Hollerith's Machine completed the compilation of census data in 2 years instead of 8 years. Herman Hollerith was the founder of the company that became IBM.  

 Hollerith's Machine was developed by an American Statistician. What was his name?

(A) Herman Hollerith                                     

(B) Beyman Hollerith

(C) Herican Hollerith                                      

(D) Henry Hollerith

(E) None of these  

Answer: (A)

Explanation

Correct Option:

(A) Herman Hollerith: Is an American Statistician who developed Hollerith's machine. Incorrect Options:

(B) Beyman Hollerith: Is an Incorrect name. That's why option (C) is Incorrect.

(D) Henry Hollerith: Is an Incorrect name. That's why option (D) is Incorrect.

(E) Option (E) is Incorrect.    

 Hollerith system used a hand punch to record the data as holes in dollar- bill-sized punch cards and a tabulating machine to count them. How many years did it take to complete the compilation of census data?

(A) 8 yrs                                                              

(B) 2 yrs

(C) 1 yrs                                                               

(D) 5 yrs

(E) None of these  

Answer: (B)

Explanation

Correct Option:

(B) 2 yrs.: Hollerith machine took 2 years to complete the compilation of census data.

Incorrect Options:

(A) 8 yrs.: Hollerith machine completed the compilation of census data in 2 years instead of 8 years.

(C) 1 yrs.: Hollerith machine completed the compilation of census data in 2 years. That's why option (C) is Incorrect.

(D) 5 yrs.: Hollerith machine completed the compilation of census data in 2 years. That's why option (D) is Incorrect.

(E) Option (E) is Incorrect.