The invention relates to a computer containing a RAM-based primary part (Ht) with a stucturable RAM unit (2). On the input side, a first crossbar switch (1) is located upstream of said unit and a second crossbar switch (3) is located downstream. Address signals (18, 13) can be supplied from the first crossbar switch (1) to the RAN unit (2) or the second crossbar switch (3). Output signals (10) can be fed back from the second crossbar switch to the first crossbar switch (1) and can be output. An additional control part (St) for a configurable job sequencing of the primary part (Ht) comprises a counter unit (4) that is synchronised with the first crossbar switch (1) to create counter reading signals (12) for the first and second crossbar switch (1 and 3). The computer is particularly suitable for integrating a global cellular automaton (GCA).