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final_F2006 - MAE-10 Final Examination Fall 2006 History 1...

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MAE-10 Final Examination Fall 2006 History 1. What is the technology in physics that originated the third-generation computers? (1 pt) 2. What is the main contribution of John Backus to the history of computing? (1 pt) 3. What is the main contribution of J. P. Eckert to the history of computing? (1 pt) 4. What is the name of the first commercially available computer? (1 pt) 5. Give two examples of operating systems? (2 pts) 6. What is the difference or relation between a bit and byte? (2 pts) 7. Why do Mechanical and Aerospace Engineers prefer FORTRAN over other languages in general? (2 pts) UNIX Describe exactly what the following UNIX commands do. ls -l (1 pt) ls -ls (1 pt) man cat (1 pt) head tails (1 pt) tail pascal.f (1 pt) “I crave mental exaltation.” Sherlock Holmes, The sign of the four
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Problem 1 Identify any (compilation OR execution) errors in the following FORTRAN statements. If you believe there are no errors, write “OK”. (2 pts each) 1. PROGRAM TEST X = 3. IF (X .LE. 0) THEN FVAL = -X ELSE IF (X .LT. 1.0) FVAL = X** 2 ELSE FVAL = 1.0 END IF END IF END 2. PROGRAM TEST N = 99 IF (N .GE. 90) THEN PRINT *, ’EXCELLENT’ ELSE IF (N .GE. 80) PRINT *, ’GOOD’ ELSE IF (N .GE. 70) PRINT *, ’FAIR’ ELSE PRINT *, ’BAD’ END IF END 3. PROGRAM TEST READ *, X, Y IF (X .GE. 0) THEN IF (Y .GE. 0) THEN PRINT *, X + Y ELSE PRINT *, X - Y END IF ELSE PRINT *, Y - X END IF END
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