A code sequence is encoded using a code conversion table in which the parity of the code sequence varies until the code states become equal to each other. Therefore, the brake control device can appropriately keep the braking force. The antenna, the low noise amplifier, and the phase shifter are formed on one high resistance substrate. Finally complete the manufacture of the capacitor by sealing the capacitor, and conducting the age process. A control gate is formed over the inter-gate insulator.