As you will already know if you read this blog frequently, the DC, also abbreviated as CC (or DC in English), is a current with one direction.
ດັ່ງທີ່ເຈົ້າຈະຮູ້ຢູ່ແລ້ວຖ້າເຈົ້າອ່ານ blog ນີ້ເລື້ອຍ frequently, the DC, ຍັງຫຍໍ້ເປັນ CC (ຫຼື DC ໃນພາສາອັງກິດ), ແມ່ນກະແສທີ່ມີທິດທາງດຽວ.