The invention relates to a shopping cart having a sliding handle, which has module-like functional elements, wherein the functional elements are substantially accommodated in a recess of the sliding handle and protrude so far out of the sliding handle that good usability of the functional elements is given. The effects processor comprises a RISC processor, a DSP for fast integer multiplication and a small memory. The cache memory distinguishes between pop and load instruction requests and provides pop data faster than load data by speculating that pop data will be in the top cache line of the cache. A memory device stores data relating to characteristics of the printhead.