Ken je de #diskette nog?

Op de headerfoto zie je een flinke stapel diskettes. 

Diskettes waren magnetische geheugendragers voor in je computer, de opvolger van de wat grotere floppy-disk.

In zowel de diskette als de #floppy -disk zit een schijfje dat is bedekt met een magnetische laag, waarop bestanden kunnen worden opgeslagen. De #diskette is de verbeterde uitvoering van de #floppy -disk, met een diameter van 3,5 inch. Het zeer kwetsbare magnetische schijfje zet netjes opgeborgen in een kunststof hoesje. Aan de diskette zit een metalen strip, die opzij beweegt als je de diskette in het diskettestation stopt. Hierdoor komt het schijfje vrij te liggen en kunnen de gegevens gelezen of geschreven worden.

Diskettes worden bijna niet meer gebruikt. De computers van tegenwoordig worden al lang niet meer uitgerust met een #diskettestation , maar er bestaan wel varianten die je op een USB-poort kunt aansluiten. De reden van het in onbruik raken van diskettes zit in de capaciteit, die naar moderne maatstaven hopeloos te kort schiet.

Op een diskette kon je ofwel 720 Kb (kilobyte) ofwel 1,44 Mb (megabyte) kwijt. Dat hing ervan af of diskette Double Density was of High Density.  Uiterlijk is er maar weinig verschil tussen een HD- of een DD-diskette. Een HD-diskette heeft een HD-logo, en bovendien een  vierkant gaatje, rechts onderin. 

Tegenwoordig meten we de capaciteit van opslagmedia niet meer in kilobytes (=1000 bytes) of megabytes (=1000 kilobytes), maar in gigabytes (= 1000 megabyte) of zelfs in terabytes (1000 gigabyte). 

Voor het gemak tel ik hier met '1000', en niet met het correctere '1024'.

Voor 1 Gigabyte zou je zo'n 700 diskettes nodig hebben.

De hele stapel diskettes op de foto hiernaast neemt tegenwoordig maar een klein deel van de ruimte in van een micro-sd kaartje, zo'n kaartje dat je op je vingernagel kunt leggen....  

Op een micro-sd kaartje kun je tegenwoordig al snel 8 Gb, 16 Gb kwijt, en je hebt ze al waar 128 Gb op kan.

 Tel maar eens uit.....Vul je één kubieke meter met  double-sided high density diskettes, dan kun je in totaal iets meer dan 43 Gb kwijt.  Ofwel: voor de capaciteit een micro-sd-kaartje van 128 Gb, dat je op de nagel van je pink kunt leggen, had je drie kubieke meter diskettes nodig ...

(c) 2017-2018 Hans van Gemert

Afbeelding: eigen foto


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A cow says not only boo
One #koe says “boo” and not only that. #Koeien can also be a huge mess!Of the week since the clock was set back an hour there were still a few raging at night.For the record, I live in the countryside near farms. Fantastic green and lovely living and I love cows very much, but that #loeien Haha. I just didn't sleep all night. I used to have a whole collection of cow stuff. From crockery to pillows. You couldn't think of it so crazy, or I had something like cows. Back then you saw it a lot, among others at Xenos. So I was a fan, but now that they were so loaning the week I was a little less fan. - Previously - When I was a kid, I used to stay with my grandfather and grandmother. They had a small cottage next to a farm. On that #boerderij I could always help with my sister with all sorts of chores, such as fattening out the stable, taking care of rabbits, picking fruit trees, giving bottles of milk to the lambs, but also picking up the cows from the country when it was milking time. We cried very loudly “HEY HUP” and then you hoped that they all walked nicely in a row to the milkhouse. But sometimes you had a stubborn cow who would stand in the ditch. Hilarious animals are. We also got fresh milk from the cow to drink or colostrum. That stuff I really didn't get away brbrbr.. Once we were picked up by the woman of the house in the evening. A cow was at the #kalveren and we were allowed to watch the delivery. I didn't see much of the childbirth back then. I never forget that I saw the calf come out half and then it went black, I fainted hahaha. Question and Answer - But now the question arises: “Why do cows moan?” There are several answers for that, namely: To get a social bond between themselves. How cute is that. Nice chatting with each other those cows. Not only people can enjoy it, cows also love chatting! Or shout to the other, if, for example, mom cow shouts her child (calf): “Stay with me! “Scientists from London investigated this behaviour and came to the conclusion that cows are chatting a lot, especially the mother cows with their calves. Thus they discovered that when the mother cow lurked a low noise, talking to the calf at a short distance, and when she made a higher noise, she called the calf as it were, because the calf was too far away from her. If a cow is “drafty”.. And then I have to explain, because the cow is on the trail? No... this means thata cow #vruchtbaar is. When a cow is 8 months old she becomes fertile and every three weeks she becomes “drafty”Then she puts it on a moan and wants to be fertilized.Like a cow hair #kalf must miss. Sometimes she lurges for days in a row. When it came to us last week soa few nights and nights, I thought at first it might have come through the clock reset, butSo it could also be that there might be a cow missing her calf. Low Humming - You speak of this term when a cow is content to ruminate in the grass and make a low humming noise. This was investigated by a group of students of Applied Biology in 2014 who conducted their research in a dairy farm. They used certain developed software from UltraVOX provided by Noldus Information Technology B.V. In addition to the “low humming” observed, they also discovered that adult cows were lower in tone than young cattle. If you want to read the entire research, you can find the page here. Source mention text: Other fun and interesting blogs about cows - Cows talk to each other about how they feel - Read more cows - Read more Every year thousands of cows die from litter - Read more Cute cows craft ideas - Nice cow tinkering? Cows crafting tips! - Read more Cow crafting from a paper cup? - Read more Crafts with popsicles - Croubles in the meadow make you happy - Read more Newspaper Art - Crafts a cow of newsprint - Read more Drawing calligram - The Cow - Read more Craft yourself a cheerful cow from a flower pot - Read more #cows #koe #loeien #boerderij #knutselen #lowhumming #informatie #blog #lezen #weten #zoeken Do you like reading and/or blogging? Sign up for FREE at Yoors via login and join us! - Login