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  2. Machine-readable document - Wikipedia

    en.wikipedia.org/wiki/Machine-readable_document

    The Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of the presentation of the document, including the text, fonts, graphics, and other information needed to display it.

  3. Simplified Instructional Computer - Wikipedia

    en.wikipedia.org/wiki/Simplified_Instructional...

    Format 3: Consists of 6 bits to store an instruction, 6 bits of flag values, and 12 bits of displacement. Format 4 : Only valid on SIC/XE machines, consists of the same elements as format 3, but instead of a 12-bit displacement, stores a 20-bit address.

  4. MARC standards - Wikipedia

    en.wikipedia.org/wiki/MARC_standards

    MARC (machine-readable cataloging) is a standard set of digital formats for the machine-readable description of items catalogued by libraries, such as books, DVDs, and digital resources. Computerized library catalogs and library management software need to structure their catalog records as per an industry-wide standard, which is MARC, so that ...

  5. SECD machine - Wikipedia

    en.wikipedia.org/wiki/SECD_machine

    The SECD machine is a highly influential (see: Landin's contribution) virtual machine and abstract machine intended as a target for compilers of functional programming languages. The letters stand for stack , environment , control , dump , respectively, which are the internal registers of the machine.

  6. Instruction set architecture - Wikipedia

    en.wikipedia.org/wiki/Instruction_set_architecture

    (In the examples that follow, a, b, and c are (direct or calculated) addresses referring to memory cells, while reg1 and so on refer to machine registers.) C = A+B 0-operand (zero-address machines), so called stack machines: All arithmetic operations take place using the top one or two positions on the stack: [9] push a, push b, add, pop c.

  7. Machine-readable medium and data - Wikipedia

    en.wikipedia.org/wiki/Machine-readable_medium...

    Machine-readable data must be structured data. [1]Attempts to create machine-readable data occurred as early as the 1960s. At the same time that seminal developments in machine-reading and natural-language processing were releasing (like Weizenbaum's ELIZA), people were anticipating the success of machine-readable functionality and attempting to create machine-readable documents.

  8. Reduced instruction set computer - Wikipedia

    en.wikipedia.org/wiki/Reduced_instruction_set...

    The Sun Microsystems UltraSPARC processor is a type of RISC microprocessor.. In electronics and computer science, a reduced instruction set computer (RISC) is a computer architecture designed to simplify the individual instructions given to the computer to accomplish tasks.

  9. PCB NC formats - Wikipedia

    en.wikipedia.org/wiki/PCB_NC_formats

    The name Excellon format is derived from the company Excellon Automation (not to be confused with Excellon Software), which was the market leader in PCB drilling and routing machines during the 1980s, and whose proprietary format became widely used. There are actually two Excellon formats, the older Excellon 1 and Excellon 2.