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Digital image: excercises 41 and 42
41. Think you want to print out a photograph with a size of DIN A4: 210 X 297 mm maintaning maintaining a printing quality of 200 dpi. Which resolution would the image need? 8.27"X 200 dpi = 1,654 pixels of tall. 11.69"X 200 dpi = 2,338 pixels of long. Total resolution = 1,654 X 2,338 = 3,867,052 pixels = 3.87 megapixels. 42. W hich resolution would the same picture need to have a 300 dpi 8.27"X 300 dpi = 2,481 pixels of tall. 11.69"X 300 dpi = 3,507 pixels of long. Total resolution = 2,481 X 3,507 = 8,700,867 pixels = 8.7 megapixels.
Digital Security: Public Conections
PUBLIC CONECTIONS My brother always uses public conections , like public libraries or cultural centers, to do his online works . He has an important job and manage sensible information about clients and business . I think this is not a good idea to use public wi-fi connections to do so… Ussefull tips: Use a VPN. Use SSL connections. Turn off sharing. Keep Wi-Fi off when you don't need it. Take precautions. A good video whit basic information: Links to know more: Public wi-fi risks Cargando… Go to the basic post .
Digital Security: Malware or Virus in your phone
Malware or Virus in your phone. Issue description: I think my telephone has a type of malicious software that makes me believe that my cell has a virus . Sometimes, it will fool me into believing that my security measures are old . In turn, they offer new updates for my security settings. So I do not know what to do… Ussefull tips: Make sure that you invest in reputable and robust security software. Don’t click on links in text messages or emails that you aren’t familiar with. Keep your software and operating system up-to-date. Only install applications from the Google Play Store and other sources you can trust. Turn your phone Off before performing some research. Opt for a factory reset. A good video whit basic information: Links to know more: Remove Malware from Your Android Device Cargando… Go to the basic post .