en

reading head

1

Terminological databases

EKI terminibaas Esterm

ID 698871 Last modified 25.09.2018
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Domain Automation - Computer Science - Information Technology
  • a magnetic head capable of reading only
lugemispea
Usage examples
  • Selleks, et disketilt andmeid lugeda saaks, pannakse ketas kettaseadmes vastava ajamimehhanismi abil pöörlema. Tavalise magnetofoni helipead meenutav lugemis- salvestuspea nihutatakse servomootori abiga disketi salvestus-lugemisava kohale. Selle kaudu toimubki tegelik andmete salvestamine (magneetimine päri või vastassuunas) või nende lugemine. Lugemis-kirjutamispead saab pöördusvarre abil viia ühelt rajalt teisele. Pöördusvarred moodustavad salvestil ühtse mehhanismi, nii et igal kettapinnal on lugemis- kirjutamispead alati samal silindril. Ketta kiirus on kogu aeg konstantne (vanadel 5,25 ja 8,5- stel mittekonstantne). Vanemate 5,25” kettaajam teeb 360 pööret minutis (RPM), uuemad 3,5”- sed 300 pööret minutis. Pöördumise ajal puudutab lugemis-salvestamispea ketta pinda.
read head preferred
Usage examples
  • ... Optical reader for reading alphanumeric dot-matrix printing characters and converting them into electrical signals, comprising a read head containing an optical detector, an amplifier, a focusing lens and two lamps, linked by one or two flat cables to a central module the dimensions of which do not exceed 200 x 220 mm, comprisng a printed circuit board on which are mounted a microprocessor, an image recognition circuit and an analogue-to-digital converter ...
reader head

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