Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
IBM 4300
Table title:
Models
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Model </th><th colspan=1 rowspan=1 > Announced </th><th colspan=1 rowspan=1 > Withdrawn </th><th colspan=1 rowspan=1 > Max Memory </th><th colspan=1 rowspan=1 > Approximate Performance </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 4331 </td><td class="highlighted"  colspan=1 rowspan=1 > 1979 </td><td colspan=1 rowspan=1 > 1981 </td><td colspan=1 rowspan=1 > 8MB </td><td colspan=1 rowspan=1 > 4 × 370/115 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 4341 </td><td class="highlighted"  colspan=1 rowspan=1 > 1979 </td><td colspan=1 rowspan=1 > 1986 </td><td colspan=1 rowspan=1 > 16MB </td><td colspan=1 rowspan=1 > 3.2 × 370/138 </td></tr>
<tr> <td colspan=1 rowspan=1 > 4361 </td><td colspan=1 rowspan=1 > 1983 </td><td colspan=1 rowspan=1 > 1987 </td><td colspan=1 rowspan=1 > 12MB </td><td colspan=1 rowspan=1 > 3 × 4331 </td></tr>
<tr> <td colspan=1 rowspan=1 > 4381 </td><td colspan=1 rowspan=1 > 1983 </td><td colspan=1 rowspan=1 > 1992 </td><td colspan=1 rowspan=1 > 64MB </td><td colspan=1 rowspan=1 > 9 × 4341 </td></tr>
</table>
Question:
What models were announced in 1979?
Answer:
The IBM 4341 was announced in 1979 like the 4331.