An electrical connector for mounting on a printed circuit board having a plurality of through holes includes a dielectric housing. When receiving a content additional recording request from the device, the delivery center decrypts once encrypted contents to be additionally recorded with the corresponding-content keys. Accordingly, the monitor according to an aspect of the present invention prevents the lower part of the monitor body from making contact with the base member when the height of the monitor body is adjusted, and is convenient to use as the monitor body can be tilted relative to the base member. At least one valve assembly controls the movement of a fluid within the annular passage. The amplified signal, which in one embodiment is dependent on the resistive state of the selected memory element, is used to rapidly determine the memory state stored by the selected memory element. The silicon dopant composition includes at least one silicon compound that is isotopically enriched above natural abundance in at least one of 28Si, 29Si, and 30Si, and may include a supplemental gas including at least one of a co-species gas and a diluent gas.