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January 28 2012
January 27 2012
January 26 2012
January 25 2012
this pic was already posted, but now it has a source link (:
“— Pipe Logic (by Linus Akesson)Delightfully useless epiphany: Suppose the null-byte is an electron. Then, /dev/zero provides an infinite supply of electrons and /dev/null has an infinite appetite for them. Let's call these devices Vss and Vdd, respectively.
In this model, a UNIX pipe acts like a wire, that is, a conductor with parasitic capacitance. If the pipe is connected to Vss, its pipe buffer in kernel space quickly fills up with null-bytes, and the pipe acts like a negatively charged metal plate. If it is connected to Vdd, the pipe buffer is drained, and the pipe acts like a positively charged metal plate.
[...]
Pipes have flow control: Writes to a full pipe will block, as will reads from an empty pipe. Hence, our MOSFET would need to sense whether a read or write would block, without actually performing the read or write operation. As far as I know, no standard UNIX command can be forced into this role, but we can write such a program from scratch easily enough.
[...]
Using only pipes and our small MOSFET program, we should be able to construct arbitrarily complex digital circuits.
”
January 24 2012
January 23 2012
January 22 2012
January 21 2012
Maybe Soup is currently being updated? I'll try again automatically in a few seconds...








