Pseudostatic RAM ( PSRAM or PSDRAM ) is dynamic RAM with built-in refresh and address-control circuitry to make it behave similarly to static RAM ( SRAM ).
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Other makers of specialized memory, including static RAM, which is used to help take advantage of the speed of faster microprocessors, are expected to see slowing growth.
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The Processor Technology static RAM board drew more current than the MITS dynamic RAM board and two or three boards would tax the Altair 8800 power supply.
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IWarp processors were combined onto boards along with memory, but unlike other systems Intel chose the faster, but more expensive, Static RAM for use on the iWarp.
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Continuing to use Static RAM in Galaksija Plus would have significantly increased the cost, so designers decided to switch to bit / s by modifying another piece of firmware.
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The biggest change was the replacement of the Type 7015 64K Plated Wire Memory cabinet with a new Type 7030 131K Solid State ( Static RAM ) Memory Cabinet.
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It used common TTL parts and 2102 static RAMs . The boards were laid out with very loose part spacing and wide traces to make it easy to assemble.
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The Challenger III, introduced in August 1977, had a maximum of 53KB of static ram and used 8 " 370k byte floppy disks in its dual floppy drive system.
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It was soon moved to a new refined nMOS manufacturing process called HMOS ( for High performance MOS ) that Intel originally developed for manufacturing of fast static RAM products.
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The Etherlink III 3C509B-Combo is registred with the static RAM, U1 : DIP-28 27C256 style EPROM for boot code, U3 : 1024 bit 5V CMOS Serial EEPROM ( configuration ).
