# Pixel kachulukidwe Chiwerengero

### Kodi mapikiselo ndi chiyani?

Ma pixels pa inchi (PPI) ndiyeso ya kuchuluka kwa pixel (resolution) yazida zosiyanasiyana: mawonekedwe amakanema, makina ojambulira zithunzi, ndi masensa azithunzi za kamera. PPI yowonetsera makompyuta imakhudzana ndi kukula kwa chiwonetserocho mu mainchesi ndi kuchuluka kwa ma pixels m'malo opingasa ndi owongoka.

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### Zambiri pakulimba kwa pixel

Ngati mukufuna kuwerengera kukula kwa pixel pazenera lanu, muyenera kudziwa: kuwerengera ndi mapikiselo owerengeka komanso kukula kwazenera lanu. Kenako ikani fomuyi, kapena gwiritsani ntchito chowerengera chathu

$$d_p = \sqrt{w^2 + h^2}$$ $$PPI = \dfrac{d_p}{d_i} \ \$$ where

 $$w$$ ndi kusanja m'lifupi mwa pixels $$h$$ ndi kutalika kwa mapikiselo $$d_p$$ ndi kusanjikiza kwa ma pixels $$d_i$$ ndi kukula kokulira mu mainchesi (iyi ndi nambala yodziwitsidwa ngati kukula kwa chiwonetserochi)

Ngati mukufuna kudziwa zochulukirapo, onani kanema wowoneka bwino wa Linus Kanema pansipa.

### Kusintha kwakale kwa PPI (mndandanda wazida)

#### Mafoni am'manja

Dzina Chipangizo Mapikiselo a mapikiselo (PPI) Onetsani chisankho Sonyezani kukula (mainchesi) Chaka chayambitsidwa Lumikizani
Motorola Razr V3 128 176 x 220 2.2 2004
iPhone (first gen.) 128 320 x 480 3.5 2007
iPhone 4 326 960 x 640 3.5 2010
Samsung Galaxy S4 441 1080 x 1920 5 2013
HTC One 486 1080 x 1920 4.7 2013
LG G3 534 1140 x 2560 5.5 2014

#### Mapiritsi

Dzina Chipangizo Mapikiselo a mapikiselo (PPI) Onetsani chisankho Sonyezani kukula (mainchesi) Chaka chayambitsidwa Lumikizani
iPad (first gen.) 132 1024 x 768 9.7 2010
iPad Air (also 3rd & 4th gen.) 264 2048 x 1536 9.7 2012
Samsung Galaxy Tab S 288 2560 x 1600 10.5 2014
iPad mini 2 326 2048 x 1536 7.9 2013
Samsung Galaxy Tab S 8.4 359 1600 x 2560 8.4 2014

#### Mawonekedwe apakompyuta

Dzina Chipangizo Mapikiselo a mapikiselo (PPI) Onetsani chisankho Sonyezani kukula (mainchesi) Chaka chayambitsidwa Lumikizani
Commodore 1936 ARL 91 1024 x 768 14 1990
Dell E773C 96 1280 x 1024 17 1999
Dell U2412M 94 1920 x 1200 24 2011
Asus VE228DE 100 1920 x 1080 27 2011
Apple Thunderbolt Display 108 2560 x 1440 27 2011
Dell UP2414Q UltraSharp 4K 183 3840 x 2160 24 2014