[oystersos]

SD/MMC咭兩樣有咩唔同?邊張好用d呀?
NIMH電池持久過AA電池?thx

[malouis]

"SD/MMC咭兩樣有咩唔同?邊張好用d呀?"
SD can still develop to higher capacity, higher read and write speed, better security feature. Higher price. More suitable for high pixels DC used.

Because of the old design, MMC has reached the highest speed and capacity limit already. Some DC cannot use MMC for video recording because of its low writing speed. Lower price. Suitable for mobile phone and MP3 use.

"NIMH電池持久過AA電池?"
電池持久 is depended on the amount of power stored on the battery.
For example, 2300mAh battery 電池持久過 1800mAh battery. Alkaline AA battery stays at the same amount of "mAh", but NiMH battery is developing to store higher and higher power.