Labels:book | daily | door | earth | light | person | plant | sky | windowpane OCR: 490 SECTION A CHAPTER Even with the work of Atanasoff, Berry, and Zuse it was not clear that com- FIGURE 9-5 puters were destined to be binary electronic devices. IBM had an entirely Constructed of relay switches, different computer architecture in mind In 1939, IBM sponsored an engi- rotating shafts and clutches, the neer named Howard Aiken, who embarked on an audacious plan Harvard Mark I was described as integrate 73 IBM Automatic Accounting Machines into single unified com- sounding like "roomful of ladies puting unit. What emerged was mechanical computer officially named the knitting. The device was 51 feet IBM Automatic Sequence Controlled Calculator (ASCC but now usually long and 8 feet tall and weighed referred as the Harvard Mark (Figure 9-5) because was moved about tons. Harvard ...
