Computerized accounting systems have several advantages over manual systems, including increased speed, accuracy, and availability of information. However, computerized systems also have some limitations. They require upfront and ongoing costs, and businesses are dependent on the computers and software functioning properly. Computerized systems can also be subject to data errors and fraud. Accounting in general has limitations, such as using estimates and historical costs, limited predictive value, and qualitative factors not being measurable. Manual accounting systems are time consuming, prone to errors, inefficient, and have other disadvantages compared to computerized systems.