1974 – Univac 1050-II « Poppadillo Blog <link rel="alternate" type="application/rss+xml" title="Poppadillo Blog » 1974 – Univac 1050-II Comments Feed" href="http://texastortillafactory.com/blog/?feed=rss2&p=264" /> <script type='text/javascript' src='http://texastortillafactory.com/blog/wp-includes/js/comment-reply.js?ver=20090102'></script> <link rel="EditURI" type="application/rsd+xml" title="RSD" href="http://texastortillafactory.com/blog/xmlrpc.php?rsd" /> <link rel="wlwmanifest" type="application/wlwmanifest+xml" href="http://texastortillafactory.com/blog/wp-includes/wlwmanifest.xml" /> <link rel='index' title='Poppadillo Blog' href='http://texastortillafactory.com/blog' /> <link rel='start' title='Meme Story to Madeline' href='http://texastortillafactory.com/blog/?p=3' /> <link rel='prev' title='Leonard and I' href='http://texastortillafactory.com/blog/?p=260' /> <meta name="generator" content="WordPress 2.9.1" /> <link rel='canonical' href='http://texastortillafactory.com/blog/?p=264' /> </head> <body id="top"> <div id="network"> <div class="center-wrapper"> <div class="left" id="overview">Friday, September 10, 2010</div> <div class="right"> <ul class="tabbed" id="network-tabs"> <li class="current-tab"><a href="http://texastortillafactory.com/blog">Poppadillo Blog</a></li>    <li><a href="http://texastortillafactory.com/index.html">TTF OP</a></li>  <li><a href="http://texastortillafactory.com/contact.html">Contact</a></li> </ul> <div class="clearer"> </div> </div> <div class="clearer"> </div> </div> </div> <div id="site"> <div class="center-wrapper"> <div id="header"> <div id="site-title"> <img src="../../../../images_TTF_pgs/TTFNewHeaderSqz.jpg" width="962" height="160" border="0" class="bordered" /> <br /> <br /> <h1><a href="http://texastortillafactory.com/blog" title="Poppadillo Blog - Home">Poppadillo Blog</a></h1> </div> <div id="navigation"> <div id="main-nav"> <ul class="tabbed"> <li><a href="http://www.texastortillafactory.com/ALLPhotos.html">Photos</a></li>  <li><a href="http://www.texastortillafactory.com/genealogy.html">Genealogy</a></li> <li><a href="http://www.texastortillafactory.com/Birthday.html">Birthdays</a></li>   <li><a href="http://texastortillafactory.com/blog">Home</a></li><li class="page_item page-item-66"><a href="http://texastortillafactory.com/blog/?page_id=66" title="About the Poppadillo Blog">About the Poppadillo Blog</a></li> </ul> <div class="clearer"> </div> </div> </div> </div> <div class="main" id="main-two-columns"> <div class="left" id="main-left"> <div class="post" id="post-264"> <div class="post-title"><h1>1974 – Univac 1050-II</h1></div> <div class="post-date"> <div class="left">February 19th, 2010 in <a href="http://texastortillafactory.com/blog/?cat=12" title="View all posts in Computer Days" rel="category">Computer Days</a></div> <div class="right"><a href="#comments" class="icon icon-comment">Skip to comments (1) ↓</a></div> <div class="clearer"> </div> </div> <div class="post-body"> <p><strong>1974 – Univac 1050-II (article in Work!!)<br /> </strong></p> <p><strong> </strong></p> <div class="wp-caption aligncenter" style="width: 520px"><strong> </strong><strong><img title="UNIVAC_1050-II" src="http://texastortillafactory.com/Blog_Images/UNIVAC_1050-II.jpg" alt="" width="510" height="384" /></strong><p class="wp-caption-text">My First Computer 1974 - UNIVAC 1050-II</p></div> <p>The First Computer I worked with was a UNIVAC 1050-II. It was back in 1974, while I was stationed at Myrtle Beach AFB, South Carolina. This mainframe computer used extensively by the U.S. Air Force supply system for inventory control. In order to even to enter training into the computer career field one first had to have attained a 5-Level in Inventory Management, which I had and therefore was able to apply for and after three months training at Lowry Air Force Base, I attain the position of Computer Operator.</p> <p>In the picture the operator is reading out and altering the instructions as needed, notice the lights, on is one (1) and off is zero (o). Microprocessors perform operations using binary bits (on/off/ 1 or 0). The toggle switch below each light was used to turn the bit on or off. We did not have to read nor change the computer’s instructions very much, just when there were problems with a program or the mainframe itself.</p> <p><span id="more-264"></span></p> <p>The <a href="http://wapedia.mobi/en/UNIVAC_1050" target="_blank">UNIVAC 1050</a> was an internally programmed computer with up to 32K of 6-bit character memory, which was introduced in 1963. It was a 1-address machine with 30-bit instructions, had a 4K operating system and was programmed in the PAL assembly language. <a onmouseover="pv(event, 1)" onmouseout="unpv(1)" href="http://www.statemaster.com/encyclopedia/Instruction-set" target="_blank">Instructions</a> were fixed length (30 bits – 5 characters), consisting of a 5 bit “<a href="http://www.statemaster.com/encyclopedia/Opcode" target="_blank">op code</a>“, a 3 bit <a onmouseover="pv(event, 3)" onmouseout="unpv(3)" href="http://www.statemaster.com/encyclopedia/Index-register">index register</a> specifier, one reserved bit, a 15 bit address, and a 6 bit “detail field” whose function varies with each instruction.</p> <p>The UNIVAC 1050-II we used recorded all of its input-output on magnetic tapes (a non-volatile storage medium consisting of a magnetic coating on a thin plastic strip), and was used as a controller to format input data read from other peripherals (e.g., <a>punch card</a> readers). A punched card (or Hollerith card) is a recording medium for holding information for use by automated data processing machines) onto the magnetic tapes and then if required would transfer output data from the tapes to other peripherals (e.g., punch card punches or the <a>lineprinter</a> . Fragment of lineprinter cylinder with the type of % The Line printer is a form of high speed impact printer in which a line of type is printed at a time.).</p> <p>A version used by the U.S. Air Force, the U1050-II real-time system, had some extra peripherals. The most significant of these was the <a onmouseover="pv(event, 9)" onmouseout="unpv(9)" href="http://www.statemaster.com/encyclopedia/FASTRAND" target="_blank">FASTRAND</a> 1 Drum Storage Unit(magnetic drum mass storage system built by Sperry Rand Corporation for their UNIVAC 1100 series computers.). This physically large device had 2 contra-rotating drums mounted horizontally, one above the other in a pressurised cabinet. Read-write heads were mounted on a horizontally moving beam between the drums, driven by a voice coil servo external to the pressurised cabinet.</p> <p>This high speed (for the time) access subsystem allowed the real-time operation. Another feature was the communications subsystem with modem links to remote sites. A Uniservo VI-C provided an audit trail for the transactions. Other Peripherals were the card reader and punch, and printer. The operator’s console had the ’stop and go’ buttons(!) and a ASR33 teleprinter for communication and control.</p> <p>This Mainframe Computer’s total memory was made up of 8 memory modules, each of which had 64 kilobyte (kB) of memory capacity, totalling 512 kB of memory. This is what we commonly refer to today as Random Access Memory, or RAM, in our computers today. That is one half of one Megabyte (MB) RAM for this mainframe computer, which was used to run Base Supply. Inline during the day, and offline to run reports each evening.</p> <p>__________</p> <p>Reference Sources :</p> <p><a href="http://www.statemaster.com/encyclopedia/List-of-UNIVAC-products#Computer_systems" target="_blank">http://www.statemaster.com/encyclopedia/List-of-UNIVAC-products#Computer_systems</a></p> <p><a href="http://wapedia.mobi/en/UNIVAC" target="_blank">http://wapedia.mobi/en/UNIVAC</a></p> <p><a href="http://en.wikipedia.org/wiki/UNIVAC">http://en.wikipedia.org/wiki/UNIVAC</a></p> <p><a href="http://en.wikipedia.org/wiki/History_of_computing_hardware" target="_blank">http://en.wikipedia.org/wiki/History_of_computing_hardware</a></p> <div class="clearer"> </div> <div class="post-meta"> This entry was posted on Friday, February 19th, 2010 at 02:31 and is filed under <a href="http://texastortillafactory.com/blog/?cat=12" title="View all posts in Computer Days" rel="category">Computer Days</a>. You can follow any responses to this entry through the <a href='http://texastortillafactory.com/blog/?feed=rss2&p=264'>RSS 2.0</a> feed. You can <a href="#respond">leave a response</a>, or <a href="http://texastortillafactory.com/blog/wp-trackback.php?p=264" rel="trackback">trackback</a> from your own site. </div> </div> </div> <div class="content-separator"></div> <div id="comments"> <div class="left"> <h2>Comments: 1</h2> </div> <h3 class="right"> <a href="#respond">Leave a reply »</a> </h3> <div class="clearer"> </div> <ul class="comment-list"> <li class="comment comment-single" id="comment-2007"> <div class="comment-profile-wrapper left"> <div class="comment-profile"> <div class="comment-gravatar"></div> <div class="comment-author">Sam</div> </div> </div> <div class="comment-content-wrapper right"> <div class="comment-content-wrapper-2"> <div class="comment-body"> <div class="comment-arrow"></div> <div class="post-date"> <div class="left">March 19th, 2010 at 17:43</div> <div class="right"><a href="#comment-2007" title="Permanent link to this reply">#2007</a></div> <div class="clearer"> </div> </div> <div class="comment-text"> <p>Damn… do I remember this monster! I “played” with this machine from 1973 until I left the AF in 1978. I “played” with it at Shaw AFB SC, McGuire AFB NJ and Bitburg Ad, Germany. The one at McGuire was a dual system setup so that the “online” system was actually online almost 24 hours a day.</p> <div class="clearer"> </div> </div> <div class="clearer"> </div> </div> </div> </div> <div class="clearer"> </div> </li> </ul> </div> <div id="respond"> <ul> <li> <div class="legend" id="comment-form-title"> <div class="left">Leave a Reply</div> <div class="right"><a rel="nofollow" id="cancel-comment-reply-link" href="/blog/?p=264#respond" style="display:none;">cancel reply</a></div> <div class="clearer"> </div> </div> <div class="comment-profile-wrapper left"> <div class="comment-profile"> <div class="comment-gravatar"><img src="http://texastortillafactory.com/blog/wp-content/themes/simple-magazine/img/comment-gravatar.gif" width="40" height="40" alt="Your gravatar" /></div> <div class="comment-author">Your Name</div> </div> </div> <div class="comment-content-wrapper"> <div class="comment-body"> <div class="comment-arrow"></div> <form action="http://texastortillafactory.com/blog/wp-comments-post.php" method="post" id="commentform"> <fieldset> <div class="form-row comment-input-text"><textarea name="comment" id="comment" cols="10" rows="10" tabindex="4"></textarea></div> <div class="form-row comment-input-name"> <div class="form-property required"><label for="author">Name *</label></div> <div class="form-value"><input type="text" name="author" id="author" value="" size="28" tabindex="1" class="text" /></div> <div class="clearer"> </div> </div> <div class="form-row comment-input-email"> <div class="form-property required"><label for="email">Email *</label></div> <div class="form-value"><input type="text" name="email" id="email" value="" size="28" tabindex="2" class="text" /></div> <div class="clearer"> </div> </div> <div class="form-row comment-input-website"> <div class="form-property"><label for="url">Website</label></div> <div class="form-value"><input type="text" name="url" id="url" value="" size="28" tabindex="3" class="text" /></div> <div class="clearer"> </div> </div> <div class="form-row form-row-submit"> <input type="submit" class="button" value="Submit Comment" /> </div>  <div><input type='hidden' name='comment_post_ID' value='264' id='comment_post_ID' /> <input type='hidden' name='comment_parent' id='comment_parent' value='0' /> </div> </fieldset> </form> </div> <div class="clearer"> </div> </div> <div class="clearer"> </div> </li> </ul> </div> </div> <div class="right sidebar" id="sidebar"> <div class="section widget widget_search" id="search-2"><form role="search" method="get" id="searchform" action="http://texastortillafactory.com/blog/" > <div><label class="screen-reader-text" for="s">Search for:</label> <input type="text" value="" name="s" id="s" /> <input type="submit" id="searchsubmit" value="Search" /> </div> </form></div><div class="section widget widget_categories" id="categories-501402621"><div class="section-title">Categories</div> <ul> <li class="cat-item cat-item-12"><a href="http://texastortillafactory.com/blog/?cat=12" title="Mike and Computers where it all begin, in between and now. 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