| Revenue | 7/31/2018 | 7/31/2017 | 7/31/2016 | 7/31/2015 |
| Total Revenue | 5,964,000 | 5,177,000 | 4,694,000 | 4,192,000 |
| Cost of Revenue | 962,000 | 797,000 | 730,000 | 695,000 |
| Gross Profit | 5,002,000 | 4,380,000 | 3,964,000 | 3,497,000 |
| Operating Expenses |
| Research Development | 1,186,000 | 998,000 | 881,000 | 798,000 |
| Selling General and Administrative | 2,298,000 | 1,973,000 | 1,807,000 | 1,771,000 |
| Non Recurring | - | - | - | - |
| Others | - | - | - | - |
| Total Operating Expenses | 4,467,000 | 3,782,000 | 3,452,000 | 3,306,000 |
| Operating Income or Loss | 1,497,000 | 1,395,000 | 1,242,000 | 886,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | 6,000 | -28,000 | -39,000 | -174,000 |
| Earnings Before Interest and Taxes | 1,497,000 | 1,395,000 | 1,242,000 | 886,000 |
| Interest Expense | -20,000 | -31,000 | -35,000 | -27,000 |
| Income Before Tax | 1,503,000 | 1,367,000 | 1,203,000 | 712,000 |
| Income Tax Expense | 292,000 | 396,000 | 397,000 | 299,000 |
| Minority Interest | - | - | - | - |
| Net Income From Continuing Ops | 1,211,000 | 971,000 | 806,000 | 413,000 |
| Non-recurring Events |
| Discontinued Operations | - | - | 173,000 | -48,000 |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 1,211,000 | 971,000 | 979,000 | 365,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 1,211,000 | 971,000 | 979,000 | 365,000 |