电子发烧友

,D2RETTABLE: DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,7FHDB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,7FHDB 7FH

2009-04-14 14:52

下图为一D/A转换芯片0832与8051单片机的接口电路。编写一段程序使之产生锯齿波信号，要求波形周期为1秒？（假设延时4sm子程序DELAY已给定，0832的选通地址为0DFH），用汇编语言

2021-06-05 18:40

,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFHDB0F7H,0DFH,0F9H,0CFH,0FBH,0BFH,0C0H,007H,0DEH,0F7H,0C0H,007H

2013-04-18 12:35

,0FFH,0FFH,0FFH,0FFH,0FFH，0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFHDB 0F7H,0DFH,0F9H,0CFH,0FBH,0BFH,0C0H

2013-04-19 15:33

,#00H CALL DELAY; MOV P0,#0FBH; CALL DELAY; MOV P0,#0F7H; CALL DELAY; MOV P0,#0EFH; CALL DELAY; MOV P0,#0DFH; CALL DELAY; MOV

2021-12-01 07:09

at: 0000001EH(Flash=00HRequired=FFH) !Contents mismatch at: 0000001FH(Flash=00HRequired=DFH) !下载是成功了，程序也

2018-12-21 16:55

DPTR,#TAB2MOVCA,@A+DPTRMOV P1,AINC R4CALLD200msDJNZR5,LP2TAB1: DB 0FFH,7FH,0BFH,0DFH,0EFH,0F7H,0FBH

2012-12-10 00:13

,0CFH, 0CDH ,0F3H ,9DH ,0F8H, 3DH ,0F0H ,3DH ,0C7H ,8DH ,0DFH ,0EDH ,0FFH ,0FFH;"赵&quot

2017-08-07 11:16

或编译命令。 4、重新编译内核。make -j32 ARCH=arm64 rk3399-sapphire-excavator-edp-dfh.imgmake -j32 ARCH=arm64 rk3399-sapphire-excavator-lvds-5651-hrd20201011.img

2021-01-23 11:26

,L00EEEND ORG 0F9BH；以下为显示数据，浮动五位，可以类似做出浮动八位。DB 4FH,0DFH,4EH,0CFH,4DH,9FH,4CH,8FH,4BH,7FH, 4AH,6FH,49H

2018-11-28 14:47