一看就知道是寫錯了,17"的點距哪有0.294的.....
算一下就知道了,差那麼多...

首先,1280x1024所以長寬比是5:4
假設長為5p 寬為4p 依照畢氏定理,對角線為6.403124237p
由於17"LCD表示對角線為17吋
17 inch = 17x2.54 cm = 43.18 cm = 431.8 mm
=> 6.403124237p = 431.8 mm
=> p = 67.43583038
As a result, 長為269.7433215mm 寬為337.1791519mm
由於長為1024點構成,所以
點距 = 269.7433215mm / 1024pixels = 0.2634212124 (mm)
或是從寬來算,寬由1280點構成,
點距 = 337.1791519mm / 1280pixels = 0.2634212124 (mm)

跟"正常"廠商標示的0.264相距不遠.