PERIPHERAL SYSTEMS &lt;PSIX> AGRESS TO BUY COMPANY
  Peripheral Systems Inc said it
  agreed in principle to acquire the outstanding shares of
  &lt;Nucell Inc>.
      The agreement calls for an exchange of one share of
  Peripheral for each share of Nucell, subject to approval by
  both companies' boards, it said.
      Peripheral said its increased involvement in the
  development of Nucell's nuclear battery technology made the
  merger practical.
  

