The Donald P. Shiley School of Engineering will celebrate the 100th birthday of Charles Howard Vollum, co-founder of Tektronix, on Friday, May 31, from 3 to 5 p.m., in Shiley Hall, according to Aziz Inan, engineering. The celebration will include an invocation by Rev. David Sherrer, C.S.C., welcoming remarks by engineering dean Sharon Jones, a biography by Aziz Inan, presentations by former Tektronix employees and Vollum’s sons, Don and James Vollum, and the unveiling of an extremely rare, vintage Tektronix 511 Oscilliscope found recently in storage in Shiley Hall. All faculty and staff are invited; please RSVP to Jamie Strohecker, engineering, at 7292 or stroheck@up.edu by Tuesday, May 28.