[en] The workshop ''Data acquisition system for high energy experiment'' was held by the on-line electronics group of KEK in cooperation with the data processing section on May 28-29, 1984, at KEK. This year, the proton synchrotron is prepared for the work after shutdown, and in the TRISTAN, the full scale construction of the data acquisition system is advanced. One of the large topics was the TKO box proposed by the data acquisition development group of KEK, and its specification is included in this book. This workshop was the meeting with very wide range from front end electronics to large computers. The talks on flash analog/digital converters and latest data communication were held. As a new trial, the wish lists on the future development and support of on-line electronics and others were collected from the participants, and these were deliberated by all the members. The contents of the discussion at this time are given in this book. The summaries of the lectures presented at the meeting are collected in this book. The interchange with the experimental group is indispensable for the activities of the on-line electronics group, accordingly, the workshop like this will be held hereafter. (Kako, I.)