w6d2. software computer (hardware) 1010 0110 1011 1100 1101 1111 0000 1010 0110 1010 1110 0001 add...
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![Page 1: W6D2. Software Computer (hardware) 1010 0110 1011 1100 1101 1111 0000 1010 0110 1010 1110 0001 Add 20,22,34](https://reader035.vdocuments.net/reader035/viewer/2022062313/56649d6b5503460f94a4acf8/html5/thumbnails/1.jpg)
W6D2
![Page 2: W6D2. Software Computer (hardware) 1010 0110 1011 1100 1101 1111 0000 1010 0110 1010 1110 0001 Add 20,22,34](https://reader035.vdocuments.net/reader035/viewer/2022062313/56649d6b5503460f94a4acf8/html5/thumbnails/2.jpg)
W6D2
Software
Computer (hardware)
1010 0110 1011 11001101 1111 0000 10100110 1010 1110 0001
Add 20,22,34
![Page 3: W6D2. Software Computer (hardware) 1010 0110 1011 1100 1101 1111 0000 1010 0110 1010 1110 0001 Add 20,22,34](https://reader035.vdocuments.net/reader035/viewer/2022062313/56649d6b5503460f94a4acf8/html5/thumbnails/3.jpg)
W6D2
Memory
Magnetic core memory
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W6D2
Memory(DRAM)
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W6D2
Memory(DRAM)
![Page 6: W6D2. Software Computer (hardware) 1010 0110 1011 1100 1101 1111 0000 1010 0110 1010 1110 0001 Add 20,22,34](https://reader035.vdocuments.net/reader035/viewer/2022062313/56649d6b5503460f94a4acf8/html5/thumbnails/6.jpg)
W6D2
Software
Computer (hardware)
1010 0110 1011 11001101 1111 0000 10100110 1010 1110 0001
Add 20,22,34
![Page 7: W6D2. Software Computer (hardware) 1010 0110 1011 1100 1101 1111 0000 1010 0110 1010 1110 0001 Add 20,22,34](https://reader035.vdocuments.net/reader035/viewer/2022062313/56649d6b5503460f94a4acf8/html5/thumbnails/7.jpg)
W6D2
Running programs
Early computers:• programs on perforated cards• users installed tapes & cards…• signup sheets!
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W6D2
Running programs
Things got a bit better:• operator installed punch cards in batches (less time organizing, more computing time)• a computer program controlled the execution of user programs (jobs)• users had no direct interaction
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W6D2
Running programs
The PDP-1 operating system's timesharing ability made interactive access to computers economically viable by allowing various users to share the computer simultaneously. Shown here is the PDP-1 installation at BBN.
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W6D2
Running programs
System programs:Operating Systems
User programs:Applications
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W6D2
Hard disc
IBM DiscStorage System(1961)
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W6D2
Creating programs
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W6D2
Source code
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W6D2