prototyping boards (microprocessor) Electronic component boards that form operational microprogrammed computers, often with erasable PROMs in place of maskprogrammed ROMs. Standard types hold up to 16k bits of PROM and 8k bits of RAM。; 构成可工作的微程序控制的计算机的电子器件板,常用可擦除PROM代替掩膜 编程的ROM。标准型式的包含有多达16千位PROM和8千位RAM。
Categorical prototypicality reflects the maximum abstraction of semantic features and attributes in a certain category, which is the abstract cognition of the category 摘要范畴原型性与语义典型性是原型语义学中的两个概念。