Using assembly language, through 51, the preparation of multi-byte addition and subtraction and decimal addition procedures, so that the work to learn the process of microprocessors.

jiajianfa\(3)\03
.........\...\03.lnp
.........\...\03.M51
.........\...\03.Opt
.........\...\03.plg
.........\...\03.Uv2
.........\...\STARTUP.A51
.........\...\Text1.ASM
.........\...\Text1.LST
.........\...\Text1.OBJ
.........\新建 文本文档 (3).txt
.........\（1）\1.ASM
.........\.....\1.ASM.Opt
.........\.....\1.ASM.plg
.........\.....\1.ASM.Uv2
.........\.....\1.lnp
.........\.....\1.M51
.........\.....\STARTUP.A51
.........\.....\Text1.ASM
.........\.....\Text1.LST
.........\.....\Text1.OBJ
.........\..2）\02
.........\.....\02.lnp
.........\.....\02.M51
.........\.....\02.Opt
.........\.....\02.plg
.........\.....\02.Uv2
.........\.....\03.Opt
.........\.....\03.plg
.........\.....\03.Uv2
.........\.....\STARTUP.A51
.........\.....\Text2.ASM
.........\.....\Text2.LST
.........\.....\Text2.OBJ
.........\(3)
.........\（1）
.........\（2）
jiajianfa

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