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The secret cryptographic key used to verify communication between the PLC and workstation could be extracted from the programming software (Studio 5000 Logix Designer) and used to remotely change program code and configuration of a connected controller. The vulnerability was given a severity score of 10 out of 10 on the CVSS vulnerability scale.
Each instruction processes one data item, but there are multiple execution units within each CPU thus multiple instructions can be processing separate data items concurrently. Superscalar CPU design emphasizes improving the instruction dispatcher accuracy and allowing it to keep the multiple execution units in use at all times.
The Burroughs Large Systems Group produced a family of large 48-bit mainframes using stack machine instruction sets with dense syllables. [NB 1] The first machine in the family was the B5000 in 1961, which was optimized for compiling ALGOL 60 programs extremely well, using single-pass compilers.
Voodoo5 5000 Never released VSA-100 ×2 250 nm 4× 166 166 2:2 ×2 667 667 667 0 32 2.66 SDR 128 Voodoo5 5500 June 22, 2000 VSA-100 ×2 250 nm 2× [9] 166 166 2:2 ×2 667 667 667 0 64 5.33 SDR 128 Voodoo5 6000 Never released VSA-100 ×4 250 nm 4× 166 166 2:2 ×4 1333 1333 1333 0 128: 10.66 SDR 256
The Burroughs B5000 instruction set includes the set of valid operations for the B5000, B5500 and B5700. It is not compatible with the B6500, B7500, B8500 or their successors. Instruction streams on a B5000 contain 12-bit syllables , four to a word.
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In computer architecture, frequency scaling (also known as frequency ramping) is the technique of increasing a processor's frequency so as to enhance the performance of the system containing the processor in question. Frequency ramping was the dominant force in commodity processor performance increases from the mid-1980s until roughly the end ...
As feature sizes have shrunk and chip design tools improved over the years, the maximum complexity (and hence functionality) possible in an ASIC has grown from 5,000 logic gates to over 100 million. Modern ASICs often include entire microprocessors , memory blocks including ROM , RAM , EEPROM , flash memory and other large building blocks.