[問題] 關於8051C語言時間計算??
各位先進,大家好
末學目前正在自學8051,所用的正是12MHz
無意間寫到一段CODE如下:
for( x=1; x<=ms; x++ )
{
for(y=1;y<=300; y++ ) // =:= 300 x 3 = 1000 us = 1ms
;
}
我用keil c裡面的diassembly window
把它變成組語想試者算出時間為何是1ms(註解有標)
但礙於功力太差,無法想出
想請各位前輩告訴我該如何知道秒數的計算,謝謝!!
ps:程式的迴圈內容我已經很熟,但時間並不了解
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 180.177.40.244
推
12/22 21:35, , 1F
12/22 21:35, 1F
→
12/22 21:37, , 2F
12/22 21:37, 2F
推
12/23 02:52, , 3F
12/23 02:52, 3F
→
12/23 02:53, , 4F
12/23 02:53, 4F
→
12/23 02:53, , 5F
12/23 02:53, 5F
→
12/23 02:54, , 6F
12/23 02:54, 6F
→
12/23 14:16, , 7F
12/23 14:16, 7F
→
12/23 14:18, , 8F
12/23 14:18, 8F
→
12/23 17:22, , 9F
12/23 17:22, 9F
→
12/23 17:23, , 10F
12/23 17:23, 10F
→
12/24 01:13, , 11F
12/24 01:13, 11F
→
12/24 01:13, , 12F
12/24 01:13, 12F
→
08/13 19:34, , 13F
08/13 19:34, 13F
→
09/17 23:28, , 14F
09/17 23:28, 14F