Tokyo -- Standard & Poor's CreditWire 2/6/98 -- Standard & Poor's today assigned its 'A-1' short-term rating to the U.S. commercial paper program of Toshiba America Capital Corp., which is guaranteed by the parent, Toshiba Corp. At the same time, the rating on the commercial paper program of Toshiba America Inc., which was also guaranteed by Toshiba Corp., was withdrawn following that program's termination. The rating reflects the diversity of Toshiba's range of businesses. The company's size, superior technology base, and firm commitment to research and development allow it to compete effectively in a broad array of businesses. The company enjoys particularly strong positions in notebook computers, semiconductors, and heavy electrical apparatus. Such diversity partly insulates Toshiba from the impact