and the Spectrum. The provision of screen modes supporting 80 columns of readable text and graphics resolutions of was described as "unrivalled by every machine up to the BBC Model B itself", although the absence of a teletext mode was also noted, typically for the low memory usage characteristics of that mode, but one reviewer thought the absence of a "software simulation of a teletext screen" was a "lazy omission" even if it would have to be "awfully slow and take up piles of memory". While its speed was acceptable compared to its immediate competition, the Electron was, however, rather slower than the BBC Micro with one review noting that games designed for the BBC Micro ran "at less than half the speed, with very significant effects on their appeal". The reduced performance can be attributed to the use of a 4-bit wide memory system instead of the 8-bit wide memory system of the BBC Micro to reduce cost. Due to needing two accesses to the memory instead of one to fetch each byte, along with contention with the video hardware also needing access, reading or writing RAM was much slower than on the BBC Micro. Reviewers were also disappointed by the single-channel sound, noting that "BBC-style music" and its "imitations of various musical instruments" would not be possible, the latter due to the inability of the sound system to vary the amplitude of sounds. Despite some uncertainty about Acorn's target demographic for the Electron, some noted the potential for the machine in education given its robustness, but also given its price, noting that the high price of BBC Model B machines seemed "rarely justified by their actual practical applications in schools". The introduction of the Electron was seen as potentially leading to competition between Acorn's different models within the schools market rather than creating a broader audience for them, although the potential for more computers in schools, giving more "hands-on" experience for students, was welcomed. Nevertheless, reviewers anticipated that the Electron would sell well at the lower end of the market, with projected sales of 100,000 units by Christmas 1983, helped by the Electron's software compatibility with the BBC Micro and the already established reputation of its predecessor. With parents potentially being convinced of the Electron's educational value, some reviewers foresaw a conflict between parents and "discerning children", the latter merely wanting to play games and preferring models with