# Kubara ubucucike

### Ubucucike bwa pigiseli ni iki

Pixels kuri santimetero (PPI) ni igipimo cya pigiseli yubucucike (imiterere) yibikoresho mubice bitandukanye: mubisanzwe kwerekana mudasobwa, gusikana amashusho, hamwe na sensor ya kamera yerekana amashusho. PPI yerekana mudasobwa ifitanye isano nubunini bwerekana muri santimetero n'umubare rusange wa pigiseli mu cyerekezo gitambitse kandi gihagaritse.

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### Byinshi kuri pigiseli yuzuye

Niba ushaka kubara pigiseli yuzuye ya ecran yawe, ugomba kumenya: ibara rya horizontal na vertical pigiseli ibara hamwe nubunini bwa ecran ya diagonal. Noneho koresha iyi formula, cyangwa ukoreshe calculatrice;)

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

 $$w$$ ni ubugari bugaragara muri pigiseli $$h$$ ni uburebure bwa pigiseli $$d_p$$ ni diagonal ikemurwa muri pigiseli $$d_i$$ ni ubunini bwa diagonal muri santimetero (iyi niyo mibare yamamajwe nkubunini bwerekana)

Niba ushaka kumenya byinshi kurushaho, reba iyi videwo iteye ubwoba ya Linus.

### Gutezimbere amateka ya PPI (urutonde rwibikoresho)

#### Terefone zigendanwa

Izina ryibikoresho Ubucucike bwa Pixel (PPI) Erekana imyanzuro Erekana ingano (inches) Umwaka watangijwe Ihuza
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

#### Ibinini

Izina ryibikoresho Ubucucike bwa Pixel (PPI) Erekana imyanzuro Erekana ingano (inches) Umwaka watangijwe Ihuza
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

#### Kwerekana mudasobwa

Izina ryibikoresho Ubucucike bwa Pixel (PPI) Erekana imyanzuro Erekana ingano (inches) Umwaka watangijwe Ihuza
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