Lab 1.4 1. (1) Query “IBM” to find website (2) Query “IBM” “hard disk” “first” to find search results In 1956, IBM made the first magnetic hard disk, called the RAMAC, which held about 2, 000 bits of data per square inch. http://www.research.ibm.com/about/past_history.shtml (first hit) 2. (1) Query “Father of Computing” Charles Babbage was often called the Father of Computing; he lived from 1791 to 1871. http://ei.cs.vt.edu/~history/Babbage.html (first hit) 3. (1) Query “Analytical Engine” The Analytical Engine was a mechanical digital computer created by Charles Babbage that preceded and anticipated present-day computers. http://www.fourmilab.ch/babbage/ (third hit) 4. (1) Query “Analytical Engine” only results in general information (2) Query “Analytical Engine” “powered by” results in more accurate hits No, the Analytical Engine would have been powered by steam instead of electricity. http://en.wikipedia.org/wiki/Analytical_engine (first hit) 5. (1) Query “Ada Lovelace” yields information about her studies (which include those concerning Babbage, but the search is still inefficient) (2) Query “Ada Lovelace” “Charles Babbage” gives quicker results Ada Lovelace is sometimes referred to as the first programmer. She is known for translating the description of Babbage’s analytical engine that was written by Menabrea, but also adding her own notes, tripling the size of the work. She predicted that Babbage’s machine could be used to compose music, graphics… http://www.well.com/~adatoole/bio.htm (first hit) 6. Same site/query search as above The famous poet, Lord Byron. http://www.well.com/~adatoole/bio.htm (first hit) 7. Same site/query search as above Ada has been attributed to the first computer program, after suggesting to Babbage the possibility of writing a plan for the calculation of Bernoulli numbers by the Analytical Engine. http://www.well.com/~adatoole/bio.htm (first hit) 8. (1) Query “ENIAC” yielded over a million general results (2) Query “ENIAC” “weight” resulted in more helpful results, but all in tons (3) Query “ENIAC” “weight” “kg” did not give me any results (4) Query “ENIAC” “weight” –tons was not very helpful (5) Query “tons to kilograms” gave me a unit converter The ENIAC weighed about 30 (short) tons1, which is about 27215.542 kg2. http://www.elanguest.com/reporter/computer.html (first hit)1 http://www.metric-conversions.org/weight/tons-to-kilograms.htm (third hit)2 9. (1) Query “ENIAC” “purpose” not very helpful (2) Query “ENIAC” “used for” helpful Primarily to help compute various trajectories, with its functions split up into parts: accumulator, initiator, master programmer, multiplier, divider/square-root, function tables, and others. Its first application was solving atomic energy problems for the Manhattan project. http://ei.cs.vt.edu/~history/ENIAC.Richey.HTML (fourth hit) 10. Same search query as above. The construction of the ENIAC was completed in 1945. http://ei.cs.vt.edu/~history/ENIAC.Richey.HTML (fourth hit) 11. (1) Query “electronic computers” “before ENIAC” Colossus, 1943, Alan Turing