| ULSI- Ultra Large Scale Integration | ��� ��褬�� |
| Ultra high frequency | ���� ܬ���� |
| Ultra violet light | �� ����� |
| Un Freeze All Columns | ܬ� ��袬�� |
| Unary operation | ��� ������ |
| Unconditional branch instruction | ����������� 褬� |
| Unconditional branching | ��������� |
| Unconditional transfer | �������� ������ |
| Uncontrolled loop | �좴������ ���� |
| Undo/Redo | ���� ���� / ������ |
| Unexpected halt | ����� ެ������ |
| Unit , audio response | ��좪��������� |
| Unit position | ������� ��� |
| Unit, ( VDU ) visual display | ���� ���� |
| Unit, central control | ���� �좴������ | |