Javelin Systems Inc.: The Tustin designer and developer of point-of-sale computers said it lost $689,792, or 26 cents a share, for the second fiscal quarter, which included a noncash interest charge of $522,867 related to issuing private placement warrants. A year earlier, the company lost $81,176, or 4 cents a share. Revenue for the quarter ended Dec. 31 grew to $1.3 million from $2,407. For the first half, the company lost $792,217, or 33 cents a share, compared with a net loss of $81,176, or 4 cents a share, for the first six months of the previous year. Revenue rose to $2.6 million from $2,407.