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PONG

Pong

Pong was released on November 29, 1972 by Atari who also developed the game. Pong is a coin-op cabinet simulation game. Pong is a game for 2 players. Each player operates a “paddle” via an analog knob. The object is to bounce the “ball” back and forth. The ball bounce had multiple angles to make the …

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NE555

ti-ne555-e1611020109438

The NE555 is a simple integrated circuit that can be used to make an oscillator, timer, pulse generator and delay. The versatility of the NE555 makes it very popular with hobbyists and manufacturers alike. The NE555 can run on a 5V supply or a 12V supply depending on the application. The NE556 is a dual …

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THE UNIVERSE

small magellanic cloud

The enigma of the universe is as much philosophy as it is science. 150 billion years ago, there was emptiness without form; timeless without direction. THE BIG BANG Then from the void an unimaginable explosion of energy was release, filling the realm with blindly bright light. The cosmic background radiation remains as a reminder of …

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LM78XX REGULATORS

lm7805-e1610820718833

The LM78xx regulators are made in several voltages. For example the LM7805 is 5V while the LM7812 is 12V and LM7815 is 15V. The LM78xx are make in several formats. The TO-220 and TO-3 are able to be mounted on a heat sink or attached to the logic board itself. The TO-263 and SOT-223 are …

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THE BLACK HOLE

small magellanic cloud

There has been a lot of bad media speculation about a black hole in space. By looking more closely it becomes more apparent which a black hoke really is. Gravitational collapse requires great density. In the current epoch of the universe these high densities are found only in stars, but in the early universe shortly …

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INTEL 1702 EPROM

Intel 1702

The Intel 1702 EPROM is a storage device for 8-bit systems. The device uses UV light to erase it, and then it can be reprogrammed. The advantages are obvious. Intel 1702 2048-bit array 256×8 organization PMOS technology Chip Select pin 24-pin DIP Programming the array only takes about 2 minutes. The device is static MOS, …

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THE COMPLEXITY OF THEOREM PROVING PROCEDURES

chessboard

Steve Cook published The Complexity of Theorem Proving Procedures which definitely was eye opening. It is shown that any recognition problem solved by a polynomial time-bounded nondeterministic Turing machine can be reduced to the problem of determining whether a given propositional formula is a tautology. Here reduced means, roughly speaking, that the first problem can …

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GAMBLING ADDICTION

Gambling addiction is s serious problem for many. The state of Nevada in America allows gambling which is closely regulated by the government. Problem gambling is often defined by whether harm is experienced by the gambler or others, rather than by the gambler’s behaviour. Severe problem gambling may be diagnosed as clinical pathological gambling if …

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CONWAY GAME OF LIFE

conway game of life

Conway’s game of Life is a type of cellular automata. It is simple enough to use on a monochrome display. The game is set on an infinite plane however computer implementations often use a toroidal universe due to memory and display limitations. A torus is simple to understand, roll a sheet of paper into a …

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SMPTE COLOR BARS

SMPTE logo png

SMPTE color bars replaced the monochrome Indian Head when a station was off the air. The pattern was originally conceived by Norbert D. Larky and David D. Holmes of RCA Laboratories and first published in RCA Licensee Bulletin LB-819 on February 7, 1951. U.S. patent 2,742,525 Color Test Pattern Generator was awarded on April 17, …

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