An inputoutput control device uses all of its cache memory effectively and allows cache memory modules to be added in increments of one. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts. The screening the saliva or blood spot or other non-serum bodily fluid sample detects the presence of at least one of IgA or IgM antibody to a particular food ingredient or composition. The amplifier control circuit generates an amplifier startup signal with respect to an amplifier circuit based on a signal from the dummy column selector. This slot is formed thin, to correspond to the keying protrusion of the mounting portion.