It was the years 1973, 1974,...In the article on "CONCATISO my first program" I described in broad strokes the characteristics of the computer CID-201-B compatible with the PDP-8 of the DEC company.Recall that it was 12 bits long, but also only had a 12-bit accumulator register and 1 carry bit.Machine language instructions were encoded in those 12 bits where sometimes another word was used to access groups of 4096 (12 bits) memory words, and thus be able to access all 32 Kilowords...

Yesterday walking and walking I went to repair a fan where a technician who has been repairing electrical appliances for more than 20 years, has a lot of experience, is fast and accurate.Upon arrival there was a "return at 2:30" sign and waiting for it a Mrs. arrived with a rice cooker. Well, we started talking and talking, and I said to myself, why wait until everyone has internet to use Facebook? Facebook we have it within reach...Well, without meeting each other, exchanging pho...

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The articles presented in this space are the authorship of Onelio García Pérez and his friends, © www.HobbiesEnRed.com, based on empirical research, there have been few investigated periods as a result of addressing issues that go beyond the particular objectives of the Author. The historical approach present in the fascicles is the product of the limited bi...

As the title indicates, the microsoft office database product, Microsoft Access, is limited by the company itself so that it does not compete with other products such as SQL Server and C# program development, for example.I explain:The first limitation is the commercial one. Access is not sold alone, but as part of Microsoft Office and therefore an application made in Access cannot be distributed without first verifying that the customer has a valid license of the same Office as suc...

It is known to all that the use of Spreadsheets, such as the current Excel, since the beginning when VisiCalc appeared in 1979, have allowed many users without programming knowledge to be able to develop many and varied applications.In particular, the world of economics has been empowered by Spreadsheets. An accountant can directly carry out all or almost all of his work using them, since from the beginning they were conceived with a varied communication with other data processing...

It was 1974 and an Engineer from the Department of Neurophysiology named Alberto Caro had designed a device for the experimental work of the department that could be controlled by our CID-201-B computer, compatible with the PDP-8, which I referred to in the article "CONCATISO. My first program.".Due to production priorities, the Central Institute for Digital Research (ICID) did not give us what would later be named as MEDICID-2 and for that reason, with great inventiveness, the eng...

Any two-dimensional screen can be viewed as a collection of rectangular cells. A point and even the entire screen can be defined as such.Almost all cell phones and computer screens are two-dimensional screens.Therefore, anything that runs on mobile phones or PCs or Macs is viewed on a two-dimensional screen as a collection of rectangular cells.In conclusion, anything that runs on mobile phones or PC or Mac can be conceived as a spreadsheet both practically and theoretically.Spreads...

Hi !. I am Octavio, and as editor of this section I offer to share your experiences in programming, from curious anecdotes to difficult moments when making large or small systems. We will also share how to solve all kinds of problems using programming as a tool, for PCs, for Mobiles, and even for the Cloud. If you are a novice, then welcome, and if you are an expert, then welcome too. All kinds of writings will be interesting to us to publish, because where else will you find tha...

Any two-dimensional screen can be viewed as a collection of rectangular cells. A point and even the entire screen can be defined as such. Almost all cell phones and computer screens are two-dimensional screens. And some may be three-dimensional. Therefore anything that runs on mobiles or PCs or MACs is seen on a two-dimensional screen as a collection of rectangular cells, or three-dimensional as rectangular cubes. In conclusion, anything that runs on mobiles or PCs or MACs can b...

Under Rocinante's helmets I made the happiest quixot of my life.It was the 80s of the last century, and my friend Peter and I, being at a scientific event at the University, we read on a flyer that in "El Bodegón de Bartolo", a nearby coffee bar, from 10 AM it could be consumed with beer At an open bar and we couldn't hold out, we went out there with Peter's girlfriend, Yanai.When we get to the bar they inform us that no, that there is nothing at all until 5 pm, and then Yanai tell...

My current works and ideas.Over the years I have been developing a series of works and research proposals that I would like to present to you as a whole for your consideration. For each one you will find here an introduction to the topic and also links to the complete content already more elaborated. Most of the topics are under development and from time to time I add or modify information. Keep this in mind so that from time to time you can revisit the topics that were of interest...

The history of Spreadsheets is fascinating, from Richard Mattessich who in 1972 wrote the article "Budgeting Models and System Simulation" creating the concept, to Pardo and Landau, who tried to obtain a Patent.But the renowned inventor of Spreadsheets is Dan Bricklin, with his VisiCalc, which was available since 1979 and was, let's say, the first and most important computing tool in the hands of anyone when it was implemented for the first computer that we can call "personal".I kn...

  Amazon puts in your hands the book: Classic motors in Cuba 1899-2007 (Spanish Edition). Launching by Hobbiesenred of the Book: "Classic Motors in Cuba".Dedicated: To the motorcyclists of Latin America, the world and especially to the Cubans.The legend of classic motors in Cuba began on September 3, 1899. Motorcycles continued to penetrate and, from that moment on, riders began to leave their footprints all over the island, thus maintaining their permanence, hegemony and development. This bo...

CONCATISO. My first Program. Second part. By reading the first part you will already have an idea of the computational equipment that the Department of Neurophysiology had back in the years 1972... 1973 Now I will tell the other part: Professor Erwin Roy John, head of the Department of Neurophysiology at New York Medical College, donated to Thalía and her Department an analog "Transient Averaging" computer called "CAT" that was capable of obtaining, from synchronized stimuli an...

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At the beginning of the 70s we had a computer with 32 Kilowords and 12 bits in length each word and to program it encoded the machine language by hand and could also use a posfix notation language called LEAL although it was difficult for us anyway to translate algorithms especially if what prevailed was the calculation, so frequent in the Neuroscience applications that we developed supported by statistics, including multivariate ones.In those years and also in the 60's, it was com...

Since my arrival at the Department of Neurosciences I noticed that the branch of Neuro Biochemistry was, as I say, very well represented by the brilliant Swedish researcher Björn Holmgren and his wife, the talented Chilean Ruth Urbá.In almost home-like conditions, since in fact we were working in what was known at the time as "The Laboratory House", they carried out intense research using mice as an experimental basis, and their contributions to the study of sleep and its physiolog...