As above, you'll need a scientific calculator but unis may have a fixed list of approved calculator types/brands you can use - you will probably either need to either get them to review it and add a sticker or something to yours to say it's been approved, or buy one from their shop which has the uni logo on it which has been pre-approved (I've seen both cases before!).
For a laptop just get whatever suits your personal needs. You won't need to do more than basic word processing and internet based research outside of uni based computer labs/clusters. The latter will have all the specialist software you need to do your assignments, and you usually will NOT be issued a personal license for those software by your uni (and buying one yourself would be extremely expensive and largely pointless!).