ASTRO DODGE

Astro Dodge was released on March 10, 1982 by Digital Marketing Corporation who also developed the game. Astro Dodge is a space based shooter. This game was designed by David Gangola. This game was released as shareware which was very common in the early DOS period. The original Atari Asteroids was a world class arcade game. …

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QIX

Qix_Poster

Qix was released circa 1981 by Taito who also developed the game. Qix is a puzzle game. The player controls a marker that can move around the edges of the rectangular game area, Holding down one of the draw buttons allows the marker to move into unclaimed territory and draw lines (Stix) in an attempt to …

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CASTLE WOLFENSTEIN

Castle Wolfenstein

Castle Wolfenstein was released in November 1981 by Muse Software who also developed the game. Castle Wolfenstein is a top down action shooter. The game is played from a top-down perspective, though the characters are seen upright like in a side-scroller. The player traverses the levels by sneaking past, impersonating, and sometimes even killing Nazi soldiers. …

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BOSCONIAN

Bosconian was released circa November 1981 by Midway. The game was developed by Namco. Bosconian is a side-scroller action game. The player controls a small fighter ship that can move in eight directions, and can fire both forward and backward. A round consists of a number of green enemy bases that must all be destroyed …

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TEMPEST

Tempest was released circa October 1981 by Atari who also developed the game. Tempest is a tube shooter. Tempest was made with the new Atari quadrascan color vector display. The game also allowed the player to start at a higher level The objective of Tempest is to survive as long as possible and score as many …

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GALAGA

Galaga was released circa September 1981 by Namco/Midway. The game was developed by Namco. Galaga is a fixed shooter. This game is more or less another Space Invaders inspired game,. This game has insect like enemies to shoot. The goal is to rack up points which is typical with arcade games. The player controls a starfighter …

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HARD DISK CAPACITY

Vendors use a decimal system on top of a binary one. They do this to make their products look bigger. Most disks present data using the binary system, sectors are 512 bytes however modern high capacity disks are now using 4096 byte sectors driven in part by the master boot record limitations and also to …

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HARD DISK LIMITS

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One of the most frustrating problems a lot of DIY enthusiasts came up against was BIOS problems that prevented the use of larger capacity disks. In the early days, DOS version 1 which came on a floppy with our original PC could not even use directories. All saved files had to be saved in the …

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BIOS BEEP CODES

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The IBM PC 5150 and more recent personal computers all use a BIOS beep code to report certain error states. The short beep is followed by loading the operating system from floppy disk or hard disk. 1 short beep is normal 2 short beeps, POST code is shown on screen no beep, power problem or …

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IBM 5150 PERSONAL COMPUTER

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The IBM PC was released on August 12, 1981.  The machine is model 5150 and the monochrome monitor is model 5151. The desktop design is rather common in the CRT era as monitors were generally placed on top the machine. We bought one of the IBM PC machines in 2001 as the machine was much …

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DONKEY KONG

Donkey Kong was released on July 9, 1981 by Nintendo who also developed the game. Donkey Kong is a puzzle game. This game was so wildly popular it made Nintendo a literal fortune selling 60,000 units. The game introduces the character Mario, The gameplay is the move along along the platform while avoiding the barrels being …

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FROGGER

Frogger was released on June 5, 1981 by Sega. The game was developed by Konami. Frogger is a puzzle and strategy game. The game starts with three, five, or seven frogs (lives), depending on the settings used by the operator. No game in North America ever was set above 3. The player guides a frog which …

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DEFENDER

Defender was released circa February 1981 by Williams who also developed the game. Defender is a shoot’em-up arcade game. Defender is a two-dimensional side-scrolling shooting game set on the surface of an unnamed planet. This game really developed the genre of side scrolling games for many years. The player controls a space ship as it navigates …

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CRYOGENIC NITROGEN

cryogenic nitrogen system

Cryogenic nitrogen systems are widely used industrially. Smaller systems can produce 10 liters a day and larger systems can produce 1000 liters an hour. Some  videos with enthusiasts achieving extreme clock speeds have been published. 30 liter dewar flasks are a standard container for handling liquid nitrogen. The can maintain the liquid with minimal losses …

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BATTLEZONE

Battlezone was released circa November 1980 by Atari who also developed the game. Battlezone is a first person tank shooter. Battlezone is a game where the player fought other tanks in a wireframe 3D game world. The game had a goggle visor which some consider the origin of virtual reality. The game action could also be …

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