stub section

This subchapter is a stub section. It will be filled in with instructional material later. For now it serves the purpose of a place holder for the order of instruction.

Professors are invited to give feedback on both the proposed contents and the propsed order of this text book. Send commentary to Milo, PO Box 1361, Tustin, California, 92781, USA.

bits and bit strings

This subchapter is about the data types of bits and bit strings.

JOVIAL

The following material is from the unclassified Computer Programming Manual for the JOVIAL (J73) Language, RADC-TR-81-143, Final Technical Report of June 1981.

    The kinds of values provided by JOVIAL reflect the applications
    of the language; they are oriented toward engineering and contrl
    programming rather than, for example, commercial and business
    programming.  The JOVIAL values are:
    4.  Bit-string values, which are sequences of binary digits
        (bits).  They are used for communication with "on-off"
        devices or to control parts of the program itself.  For
        example, a bit-string could be used to represent
        settings of switches on a control console.

Chapter 1 INTRODUCTION, page 2

         ITEM CONTROLS B 10;   A bit-string item, whose value is a
                               sequence of ten bits.  Thus it can
                               accommodate, for example, the settings
                               of ten on/off console switches.

Chapter 1 INTRODUCTION, page 5

PL/I

Bit declarations:

type of data: logical

S/360, S/370 data format: bit (1 to 8 bits per byte)

default length: none

maximum length: 8000 bits for constants
32767 bits for variables

example:

DECLARE SPECIAL_PATTERN BIT (8) INIT ('111000'B);

Bit strings are stored from left to right, padded to the right with zero bits.

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Coding example: I am making heavily documented and explained open source code for a method to play music for free — almost any song, no subscription fees, no download costs, no advertisements, all completely legal. This is done by building a front-end to YouTube (which checks the copyright permissions for you).

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Create your own copy from the original source code/ (presented for learning programming).

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Because I no longer have the computer and software to make PDFs, the book is available as an HTML file, which you can convert into a PDF.

†UNIX used as a generic term unless specifically used as a trademark (such as in the phrase “UNIX certified”). UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Ltd.

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bits and bit strings

summary

free computer programming text book project

stub section

bits and bit strings

JOVIAL

PL/I

free music player coding example

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OSdata.com

bits and bit strings

summary

free computer programming text book project

stub section

bits and bit strings

JOVIAL

PL/I

free music player coding example

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free computer programming text book project

view text book
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