XKCD, Credit Card Rewards
Via the genius of Randall Munroe, creator of XKCD.
The post XKCD, Credit Card Rewards appeared first on Security Boulevard.
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Category Archives: logic
FPGA Clocks for Software Developers (or Anyone)
It used to be that designing hardware required schematics and designing software required code. Sure, a lot of people could jump back and forth, but it was clearly a different discipline. Today, a lot of substantial digital design occurs using a hardware description language (HDL) like Verilog or VHDL. These look like software, but as we’ve pointed out many times, it isn’t really the same. [Zipcpu] has a really clear blog post that explains how it is different and why.
[Zipcpu] notes something we’ve seen all too often on the web. Some neophytes will write sequential code using Verilog or …read more
Continue reading FPGA Clocks for Software Developers (or Anyone)
FPGA Clocks for Software Developers (or Anyone)
It used to be that designing hardware required schematics and designing software required code. Sure, a lot of people could jump back and forth, but it was clearly a different discipline. Today, a lot of substantial digital design occurs using a hardware description language (HDL) like Verilog or VHDL. These look like software, but as we’ve pointed out many times, it isn’t really the same. [Zipcpu] has a really clear blog post that explains how it is different and why.
[Zipcpu] notes something we’ve seen all too often on the web. Some neophytes will write sequential code using Verilog or …read more
Continue reading FPGA Clocks for Software Developers (or Anyone)
Living Logic: Biological Circuits for the Electrically Minded
Did you know you can build fundamental circuits using biological methods? These aren’t your average circuits, but they work just like common electrical components. We talk alot about normal silicon and copper circuits ‘roud here, but it’s time to get our hands wet and see what we can do with the power of life!
In 1703, Gottfried Wilhelm Leibniz published his Explication de l’Arithmétique Binaire (translated). Inspired by the I Ching, an ancient Chinese classic, Leibniz established that the principles of arithmetic and logic could be combined and represented by just 1s and 0s. Two hundred years later in …read more
Continue reading Living Logic: Biological Circuits for the Electrically Minded
200 Terabyte Proof Demonstrates the Potential of Brute-Force Math
Automated verification finds renewed potential for making algorithms safe. Continue reading 200 Terabyte Proof Demonstrates the Potential of Brute-Force Math
Paper Circuit Does Binary Math with Compressed Air
Most of us can do simple math in our heads, but some people just can’t seem to add two numbers between 0 and 3 without using paper, like [Aliaksei Zholner] does with his fluidic adder circuit built completely of paper.
There’s some good detail in [Aliaksei]’s translated post on the “Only Paper” forum, a Russian site devoted to incredibly detailed models created entirely from paper. [Aliaksei] starts with the basic building blocks of logic circuits, the AND and OR gates. Outputs are determined by the position of double-headed pistons in chambers, with output states indicated by pistons that raise a …read more
Continue reading Paper Circuit Does Binary Math with Compressed Air
Paper Circuit Does Binary Math with Compressed Air
Most of us can do simple math in our heads, but some people just can’t seem to add two numbers between 0 and 3 without using paper, like [Aliaksei Zholner] does with his fluidic adder circuit built completely of paper.
There’s some good detail in [Aliaksei]’s translated post on the “Only Paper” forum, a Russian site devoted to incredibly detailed models created entirely from paper. [Aliaksei] starts with the basic building blocks of logic circuits, the AND and OR gates. Outputs are determined by the position of double-headed pistons in chambers, with output states indicated by pistons that raise a …read more
Continue reading Paper Circuit Does Binary Math with Compressed Air
Hackaday Prize Entry: Hot Logic
A few weeks ago, [Yann] was dumpster diving and found something of interest. Two vacuum tubes, an ECC83S and an EL84. This was obviously the droppings of a local guitarist, but [Yann] wanted to know if he could build something useful out of them. An amplifier is far too pedestrian, so he settled on a vacuum tube computer.
The normal pentodes and triodes you’ll find in a tube amp require a lot of support components like output transformers, tube sockets, and high voltage power supplies. This was a little too complicated for a tube computer, but after a little bit …read more
Relay Computer Starts with an Adder that Makes a Racket
Computers built using discrete logic chips? Seen it. Computers from individual transistors? Impressive, but it’s been done. A computer built out of electromechanical relays? Bring on the ozone!
The aptly named [Clickity Clack]’s new YouTube channel promises to be very interesting if he can actually pull off a working computer using nothing but relays. But even if he doesn’t get beyond the three videos in the playlist already, the channel is definitely worth checking out. We’ve never seen a simpler, clearer explanation of binary logic, and [Clickity Clack]’s relay version of the basic logic gates is a great introduction to …read more
Continue reading Relay Computer Starts with an Adder that Makes a Racket
Relay Computer Starts with an Adder that Makes a Racket
Computers built using discrete logic chips? Seen it. Computers from individual transistors? Impressive, but it’s been done. A computer built out of electromechanical relays? Bring on the ozone!
The aptly named [Clickity Clack]’s new YouTube channel promises to be very interesting if he can actually pull off a working computer using nothing but relays. But even if he doesn’t get beyond the three videos in the playlist already, the channel is definitely worth checking out. We’ve never seen a simpler, clearer explanation of binary logic, and [Clickity Clack]’s relay version of the basic logic gates is a great introduction to …read more
Continue reading Relay Computer Starts with an Adder that Makes a Racket